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:
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!
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.
modifying nounhead noun
I fixed the table with a nail gun.
→ a gun for shooting nails
The order of the head noun and modifying noun is very important! If you reverse the order, the meaning will change! For example:
→ a dog that comes from a rescue / a dog that rescues people
→ a rescue organization that helps dogs / a rescue done by a dog
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:
modifying nounhead noun
They bought two picture frames at the store.
modifying nounhead noun
There are six blueberry pancakes in the stack.
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.
→ a day for playing sports
→ 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:
→ 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.
other descriptive wordmodifying noun
I put the photo in an ancient, gold picture frame.
other descriptive wordmodifying noun
We have several cold, blue water bottles.
You can use more than one modifying noun before the head noun:
modifying noun
I bought five wool army blankets.
→ blankets made of wool that are of the type used by the army
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...
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.
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:
→ a table designed for drinking coffee around
→ a mix for making pancakes
→ a government for students
→ a machine for washing clothes
→ pills for treating pain
An object and what it is made out of:
→ pancakes made with blueberries
→ boots made out of the skin of a snake
→ honey made from clover flowers
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 noun for an action or an agentNo definition set for agentLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. and the objectNo definition set for objectLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. of the action. This is particularly common when the head nouns that end in -er (an agent nounNo definition set for agent nounLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.) or -ing (a gerundNo definition set for gerundLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.):
→ someone who drives trucks
→ a tool for poking the fireplace
→ an action where someone washes windows
→ 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:
→ school that happens in the summer
→ a meal that happens at midday (noon)
Something and where it is/happens:
→ hockey played in the street
→ a park in a neighborhood
→ a store at the corner of the street
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:
❌ a machine to wash things in general
✅ a machine to wash clothes
❌ a vine made of trumpets
✅ a type of vine that grows flowers that are shaped like trumpets
Or a more extreme example:
❌ 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:
Then use that as the modifying noun for the next noun:
→ help for a loan for students
And so on!
→ 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
In some cases, two modifying nouns directly modify the same head noun and do not interact. Let’s look at a case like this:
→ 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
→ the act of delivering milk
→ 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 storm that includes rain
→ a dream you have during the day, when you are awake
→ a print you make with your foot
→ 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 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 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!
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:
adjective + noun these have much more specialized meanings than normal adjective + noun sequences | → a type of flower that generally grows outside a garden |
verb - preposition, with a hyphen (-) between these are really just phrasal verbs being used as nouns usually mean: “a circumstance where [verb + preposition] happens” | → an event where people “walk out” from work in protest → a way to “work around” a problem |
preposition + noun often with prepositions of place and direction | → a small building that is outside a house, like a shed → 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:
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 blue bicycle covered in dirt
→ 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)
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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