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How to use nouns to describe other nouns in English?

By: revel arroway, Isabel McKay Thu Sep 19 2024
English
Nouns, Adjectives

In English, we will often use a noun to describe the type, purpose, or material of another noun. In other words, we can use a noun (a word for a person, place, thing) like an adjective (a word that describes a noun). For example:

A drawing of a white coffee cup filled with black coffee.
noun

coffee cup

a cup for coffee
adjectivenoun

full cup

A drawing of a small blue and white tea cup in a saucer with a teaspoon.
noun

tea cup

a cup for tea
adjectivenoun

blue cup

In this post, we’ll talk about how to use nouns like adjectives. We’ll talk about what form of the noun to use, when and why you should use a noun to describe another noun, and we’ll talk about compound words in English.

Are you ready for some grammar fun? Do you think your English brain is ready for this? Let’s get a learning session going here!

Table of Contents

    How to use a noun as an adjective in English?

    To use a noun to describe another, put it right before the noun it modifies. Just like an adjective! The noun that acts like an adjective is called the modifying noun, and the noun that is being described is the head noun.

    A drawing of a pie  with a lattice crust sitting in front of a red apple.
    modifying nounhead noun

    We made an apple pie.

    a pie made of apples
    A drawing of a hand holding up an orange and black nail gun.
    modifying nounhead noun

    I fixed the table with a nail gun.

    a gun for shooting nails
    Important

    The order of the head noun and modifying noun is very important! If you reverse the order, the meaning will change! For example:

    • rescue dog

      a dog that comes from a rescue / a dog that rescues people
    • dog rescue

      a rescue organization that helps dogs / a rescue done by a dog
    Tip

    You can also use a noun to create an adjective, as in: wool → woolen; flame → flammable; accident → accidental. However, because these words are adjectives, not modifying nouns, they follow the regular adjective rules. We’ll talk more about what makes these adjectives different below.

    Let’s talk about a few more details!

    • The modifying noun is usually singular, even if the head noun is plural:

      A drawing of two ornate gold picture frames. They are empty and overlap.
      modifying nounhead noun

      They bought two picture frames at the store.

      A drawing of a stack of 6 pancakes covered in butter and syrup on a green plate.
      modifying nounhead noun

      There are six blueberry pancakes in the stack.

      Exception!

      When the modifying noun is almost always plural, it will be plural when used as a modifying noun, even when the head noun is singular.

      • sports day

        a day for playing sports
      • arms race

        a race to develop weapons (=arms)

      There are also a few other exceptions, but these are rare. For example, when person is the modifying noun it is always plural:

      • people person

        a person who gets along with other people
    • If there are other descriptive words before the head noun, the modifying noun will usually come after them.

      A drawing of a framed picture in an ornate gold frame. The picture is a portrait of a man with short dark hair in a blue shirt in front of a blue background.
      other descriptive wordmodifying noun

      I put the photo in an ancient, gold picture frame.

      A drawing shows the bottom shelf of the open door of a small fridge, containing four bottles of water.
      other descriptive wordmodifying noun

      We have several cold, blue water bottles.

    • You can use more than one modifying noun before the head noun:

      A drawing of a stack of five hunter green woolen blankets.
      modifying noun

      I bought five wool army blankets.

      blankets made of wool that are of the type used by the army
      A drawing of a stack of 6 pancakes covered in butter and syrup on a green plate.
      modifying noun

      She made these with a blueberry pancake mix.

      a mix for blueberry-flavored pancakes

      Keep reading to learn more about how to choose the right order for your modifying nouns!

    • A pronunciation note!

      In a neutral situation, when a noun is described by an adjective, the noun is stressed in English:

      • a blue cup, an incredible journey, an amazing party

      But if the modifying word is a noun, the stress is usually on the modifying noun instead:

      • washing machine, home loan, birthday party, history book, English class, summer school, truck driver...

      However, occasionally the head noun still receives stress. This is usually when the modifying noun tells you about what the head noun is made of or when the combination of two nouns is very common, but this is not a strict rule.

      • apple pie, cotton shirt, wool blanket, blueberry pancakes...

      When there are many modifiers, generally the last modifying noun is stressed:

      • student loan help center, wool army blankets, summer heat index...

      Tip

      The rules above describe a neutral situation (like reading a list of items), but in a larger conversation you can still stress any part of the noun phrase that is surprising or important!

      • No, I want an apple pie, not a pumpkin one!

      • No, I want a birthday party, not a birthday dinner!

    When to use a noun to describe another noun?

    We use a modifying noun to describe a head noun when we want to specify what type of noun the head noun is by stating it has a relationship to the modifying noun.

    Tip

    You may notice that the relationships between the two nouns in a noun + noun constructions are a little like relationships you can create by using a possessive construction (e.g. the city’s mayor). However, the two types of noun-noun combinations do follow slightly different rules. If you’re curious to learn more, check out our post on the English possessive construction.

    Here are some of the relationships that often exist between the modifying noun and the head noun:

    • Something and its purpose:

      water bottle

      → a bottle for water

      coffee table

      → a table designed for drinking coffee around

      pancake mix

      → a mix for making pancakes

      birthday party

      → a party for a birthday

      home loan

      → a loan for a home

      student government

      → a government for students

      washing machine

      → a machine for washing clothes

      pain pills

      → pills for treating pain

      tree bark

      → bark for/of a tree

    • An object and what it is made out of:

      cotton shirt

      → a shirt made of cotton

      blueberry pancakes

      → pancakes made with blueberries

      snakeskin boots

      → boots made out of the skin of a snake

      clover honey

      → honey made from clover flowers

      Tip

      When you do this, the material must tell us what type of head noun it is. So we would not say a flour cake or a sugar cake, because all cakes have flour and sugar, but a chocolate cake is a special kind of cake.

    • A thing and its topic:

      history book

      → a book about history

      cat video

      → a video of cats

      English class

      → a class about English

      family photos

      → photos of a family

      English homework

      → homework about English

      math problem

      → a problem about math

    • A noun for an action or an agent and the object of the action. This is particularly common when the head nouns that end in -er (an agent noun) or -ing (a gerund):

      truck driver

      → someone who drives trucks

      fireplace poker

      → a tool for poking the fireplace

      window washing

      → an action where someone washes windows

      potato planting

      → an action where someone plants potatoes

      Learn more about noun phrases like these in our post on action nouns in English!

    • Something and when it happens:

      summer school

      → school that happens in the summer

      midday meal

      → a meal that happens at midday (noon)

    • Something and where it is/happens:

      street hockey

      → hockey played in the street

      neighborhood park

      → a park in a neighborhood

      corner store

      → a store at the corner of the street

    Important

    Many noun + noun combinations have become set phrases or idioms. This means that you cannot always determine their meaning (or their full meaning) just by looking at them. For example:

    washing machine

    a machine to wash things in general

    a machine to wash clothes

    trumpet vine

    a vine made of trumpets

    a type of vine that grows flowers that are shaped like trumpets

    Or a more extreme example:

    snipe hunt

    a hunt for snipe (a real kind of bird!)

    a task that that you give someone as a prank, because it cannot be completed (snipe are very hard to find, especially when they aren't there!)

    How to figure out the meaning of a phrase with many modifying nouns?

    When a head noun has more than one modifying noun, you can often figure out the meaning by starting with the pair of nouns on the left and working to the right, one noun at a time. What does that mean? Let’s look!

    Here is a noun with a lot of modifying nouns: the student loan help center.

    To break this down, we start with the first two nouns:

    student loan

    a loan for students

    Then use that as the modifying noun for the next noun:

    student loan help

    help for a loan for students

    And so on!

    student loan help center

    a center for help for loans for students!

    With nouns like this, every noun except the first is, at some point, described by another noun:

    • loan is the head noun of student loan

    • help is the head noun of student loan help

    • center is the head noun of student loan help center

    Exception!

    In some cases, two modifying nouns directly modify the same head noun and do not interact. Let’s look at a case like this:

    wool army blanket

    a blanket in the style armies use that is made of wool

    If we start left to right, this creates the noun wool army. What could this mean? An army made of wool? An army for wool? It does not make sense!

    This is because, in this noun, both wool and army directly modify blanket. It is a wool blanket and it is an army blanket.

    These cases are less common, but they do exist, so pay close attention to the context!

    Let’s look at one more very unlikely and very difficult example:

    a milk delivery truck driver license exam supervisor

    • milk delivery

      the act of delivering milk
    • milk delivery truck

      a truck for delivering milk
    • milk delivery truck driver

      someone who drives a truck for delivering milk
    • milk delivery truck driver license

      a license that allows someone to drive a truck for delivering milk
    • milk delivery truck driver license exam

      an exam that you must pass to get a license to drive a truck for delivering milk
    • milk delivery truck driver license exam supervisor

      someone who supervises the exam that you must pass to get a license to drive a truck for delivering milk! 😌

    If you can read that one, you can do anything!

    What are compound nouns in English?

    A compound noun is a single noun that is created by combining multiple words. For example…

    A black-and-white line drawing of a group of three clouds with rain coming down below them.

    rainstorm

    a storm that includes rain
    A black-and-white line drawing of a man sitting at a desk with his head in his hand. Above his head a thought bubble holds a picture of a fishing rod.

    daydream

    a dream you have during the day, when you are awake
    A black-and-white line drawing of a pair of footprints made by boots.

    footprint

    a print you make with your foot
    A black-and-white line drawing of a finger print pattern with a small magnifying glass in the corner.

    fingerprint

    a print you make with your finger

    Notice that the examples above look just like noun + noun phrases except that there is no space! Over time, noun + noun phrases that we use very often often become “compound words.”

    Compound nouns are more likely to have an unpredictable or idiomatic meaning than noun + noun sequences, because we use them together so often. For example:

    A drawing of a stack of 6 pancakes covered in butter and syrup on a green plate.

    pancake

    a round cake made from flour that is cooked in a pan and usually served with butter, syrup, and sometimes fruit (at least this is the meaning in the USA!)

    any cake made in a pan

    A drawing of a corner of a rainbow in front of a blue sky.

    rainbow

    a colored arc you see in the sky after rain

    a bow made of rain

    Therefore, it is best to look up these words in a dictionary if you aren’t sure of their meaning!

    Important

    Compound nouns made from a noun + noun are by far the most common in English, but some compound nouns also use other parts of speech. Here are some of the most common:

    Compound noun structure
    Examples

    adjective + noun

    these have much more specialized meanings than normal adjective + noun sequences

    wildflower

    a type of flower that generally grows outside a garden

    yellowjacket

    a type of wasp

    verb - preposition, with a hyphen (-) between

    these are really just phrasal verbs being used as nouns
    usually mean: “a circumstance where [verb + preposition] happens”

    walk-out

    an event where people “walk out” from work in protest

    work-around

    a way to “work around” a problem

    preposition + noun

    often with prepositions of place and direction

    outbuilding

    a small building that is outside a house, like a shed

    inroads

    a first connection that lets you form a relationship between two groups

    Nouns that describe nouns vs. “denominal adjectives”

    We mentioned above that, in English, it is also possible to turn a noun into an adjective by adding a special ending. In this section, we’ll look at the difference between these adjectives that come from nouns (also known as denominal adjectives) and nouns that are used to describe other nouns.

    • Difference 1: Adjectives have a fixed meaning

      When we use an adjective that comes from a noun, the meaning is fixed. But when we use a noun to describe another noun, the meaning can change more with context:

      Adjective
      Noun
      • woolen scarf → a scarf made of wool

      • woolen factory → a factory made of wool

      • woolen farmer → a farmer made of wool

      • wool scarf → a scarf made of wool

      • wool factory → a factory for making wool

      • wool farmer → a person who farms wool (= sheep farmer)

    • Difference 2: Order

      A noun being used to describe another noun will always come after all of the adjectives:

      adjectivemodifying noun

      a dirt blue bike
      a blue dirt bike

      a blue motorcycle for riding in the dirt

      Adjectives can come before or after other adjectives, as long as they follow the correct adjective order for English.

      adjective

      a dirty blue bike

      a blue bicycle covered in dirt

      a big dirty bike

      a big bicycle covered in dirt

    Have a look at this list of suffixes to make adjectives in English!

    Summing up

    In this post we’ve taken a look at how you can use nouns to describe other nouns. Here are some things to remember about how to form noun + noun phrases:

    • The modifying noun comes before the head noun (just like an adjective).

    • Use the singular form of the modifying noun.

    • Put any adjectives before the modifying noun.

    • Usually the last modifying noun gets the stress.

    We also talked a bit about the meaning of noun + noun phrases:

    • The noun and its modifier have some kind of relationship. This can be:

      • Something and its purpose (student loan)

      • Something and what it is made of (cotton shirt)

      • Something and its topic (history book)

      • An action and its object (hockey practice)

      • Something and when it happens (winter break)

      • Something and where it is (school auditorium)

      • And more!

    • When reading phrases with more than one modifying noun (student loan help center), it can help to start with the pair on the left and work to the right!

    Now, you’re ready to practice! Have a look at these activities on using English nouns as adjectives. Happy learning!

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