Grammar
Nouns as adjectives: singular and plural choices
A shoe shop sells many shoes, but English usually calls it a shoe shop, not a shoes shop.
Use a noun before another noun to describe its purpose or type, and choose singular or plural forms accurately.
Read and practice
Read the examples and try the written questions in this guide. Listening recordings are not available for this lesson yet.
Try the written questions
noun as adjective /naʊn æz ˈædʒɪktɪv/
The short answer
When a noun comes before another noun, the first noun usually stays singular. Say car door, book shop, and shoe shop. Some established expressions use a plural first noun, such as clothes shop and savings account.
We parked near the station entrance.
Why it works: Station tells you which entrance. It stays singular even though a station has many entrances.
3 more examples
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The hotel has a large car park behind the building.
Car describes the purpose of the park. The phrase can refer to a place for many cars.
Not this:The hotel has large
car parksbehind several buildings. What changes: Park is the main noun, so it takes the plural ending when there is more than one. -
She bought a travel guide before her trip.
Travel says what the guide is about or used for. It remains singular.
Not this:She compared several
travel guidesbefore her trip. What changes: Guides is plural because she compared more than one guide. -
There is a clothes shop beside the pharmacy.
Clothes is an established plural-first expression because clothes is normally plural.
Not this:There is a
shoe shopbeside the pharmacy. What changes: Shoe normally stays singular before shop, even though the shop sells many shoes.
Read the full guide
Read the second noun first. It is usually the main thing in the phrase. The noun before it tells you its type, material, subject, place, purpose, or user.
Find the main noun
Start with the last noun in the phrase. In a kitchen table, table is the thing you are talking about. Kitchen describes the kind of table or where it belongs.
The office chair needs a new wheel.
Chair is the main noun. Office tells you which chair it is.
Keep the first noun singular
A noun used before another noun usually has a singular form, even when the meaning includes many things. A book shop sells many books, and a car factory makes many cars.
We need a new computer room for the class.
The company opened two computer rooms last year.
Which word becomes plural when there are two rooms?
Room becomes rooms because it is the main noun. Computer stays singular.
Pluralize the main noun
When you need a plural, add the plural ending to the final noun. Compare bus stop with bus stops, and school uniform with school uniforms. The first noun still describes the type.
The town has three bus stops near the market.
Bus remains singular. Stops is plural because the sentence mentions three of them.
Learn common plural-first expressions
A smaller group of expressions keeps a plural noun before the main noun. This often happens when the first word is normally plural or is a fixed name. Examples include clothes shop, savings account, customs officer, and sports car.
He opened a savings account at his local bank.
The customs officer checked our passports.
Why is clothes shop different from shoe shop?
Clothes is normally a plural word, and clothes shop is an established expression. Shoe usually follows the general singular pattern.
Choose a possessive when ownership matters
Two nouns together do not always replace a possessive. Use a possessive when you mean that a person or group owns, uses, or is connected to something in a specific way.
The teachers' room is on the second floor.
Teachers' room refers to a room for the teachers. Teacher training describes the subject of training, as in a teacher training course.
Before you go
Remember this
In a noun-plus-noun phrase, the second noun is usually the main noun. Keep the first noun singular in most cases and pluralize the final noun when needed. Treat common plural-first expressions as vocabulary to learn as whole phrases.
Practice with the written examples
You can practice with the written questions in the Learn tab. Each answer includes an explanation.
Try the written questionsListening test not available yet
This lesson does not have the recordings needed for a listening test. Use the written questions in the guide to check your understanding.
Try the written questionsQuestions about "Nouns as adjectives: singular and plural choices"
What is a noun used as an adjective?
It is a noun placed before another noun to describe its type, purpose, place, or subject. In coffee cup, coffee describes the cup.
The hotel has a large car park behind the building.
Why do we say shoe shop instead of shoes shop?
The noun before the main noun usually stays singular in English. Shoe describes the type of shop, even though the shop sells many shoes.
The hotel has large car parks behind several buildings.
Which noun becomes plural in a noun-plus-noun phrase?
Usually the final noun becomes plural. Say bus stops, computer rooms, and language courses. The first noun normally remains singular.
She bought a travel guide before her trip.
Why do some phrases use a plural noun first?
Some phrases are established with a plural first noun, especially when that word is normally plural. Common examples include clothes shop, savings account, and customs officer.
She compared several travel guides before her trip.
When should I use a possessive instead of two nouns together?
Use a possessive when ownership or a specific relationship is the meaning. Teachers' room means a room for the teachers, while teacher training names a type of training.
There is a clothes shop beside the pharmacy.
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