type/purpose/place/content noun + main nounThe second noun names the main item. The first noun tells what kind of item it is.
Noun + Noun Compounds
B1A noun + noun compound names one thing with two nouns. The second noun is the main thing; the first noun shows the type, purpose, place, or content.
What you'll learn
- Identify the main thing by looking at the second noun.
- Use the first noun to show what kind of thing it is.
- Keep the first noun singular in most compounds.
- Notice the stronger stress on the first noun in common compounds.
- Choose natural everyday noun + noun combinations.
Structure
Build a sentence
First noun
Second noun
coffeecup
This coffee cup is on the table.
The main thing is cup. Coffee tells what kind of cup it is.
When to use
Everyday objects
Use noun + noun compounds for common items: toothbrush, coffee cup, phone charger, kitchen table.
Places and transport
Name things by place or connection: school bus, office chair, garden wall, airport train.
Content and purpose
The first noun can show what the second noun contains or is for: coffee cup, tea bag, toothbrush, phone case.
Markers
toothbrushcoffee cupschool busoffice chairphone chargerkitchen table
Spelling
very common pair
→ often written as one wordtooth + brush → toothbrushmany everyday pairs
→ often written as two wordscoffee + cup → coffee cupstyle varies by word
→ check the dictionary formsome compounds are closed, some open, some hyphenatedCommon mistakes
Wrong
A school bus is a school.
Correct
A school bus is a bus.
The second noun is the main thing. School tells what kind of bus it is.
Wrong
She works in a books shop.
Correct
She works in a book shop.
The first noun usually stays singular inside the compound.
Wrong
I need a teeth brush.
Correct
I need a toothbrush.
Even with a plural meaning, the first noun is usually singular in the compound.
Wrong
Please put it on the kitchen desk.
Correct
Please put it on the kitchen table.
English often prefers fixed everyday combinations. The grammar may work, but the common phrase is different.
Wrong
I bought a window spoon.
Correct
I bought a coffee spoon.
The first noun must create a clear real meaning such as content, purpose, place, or type.
Common misconceptions
❝ If the first noun is clear, the second noun is just extra detail. ❞
The second noun is the main word. It tells what the thing actually is: a coffee cup is a cup, a school bus is a bus.
❝ If the meaning is plural, the first noun should be plural too. ❞
In most compounds, the first noun stays singular: shoe store, toothbrush, car door.
Skills in this rule (5)
PUT_MAIN_THING_LASTw5Put the main thing in the second noun
In noun + noun compounds, the second noun is the main item and the first noun tells what kind. A coffee cup is a cup, not coffee.
USE_FIRST_NOUN_AS_TYPE_OR_PURPOSEw5Use the first noun to show type, purpose, place, or content
The first noun narrows the meaning of the second noun: what it is for, where it belongs, what it contains, or what kind it is. A toothbrush is a brush for teeth; an office chair is a chair for an office.
KEEP_FIRST_NOUN_SINGULARw5Keep the first noun singular in most compounds
The first noun usually stays singular even when the meaning is plural or general. Say toothbrush, shoe store, and car door, not teethbrush, shoes store, or cars door.
STRESS_FIRST_NOUNw3Hear and say the stronger stress on the first noun
In common noun + noun compounds, the first noun often carries the stronger stress. This helps listeners hear one combined idea, like COFFee cup or SCHOOL bus.
CHOOSE_COMMON_EVERYDAY_COMPOUNDSw4Choose common everyday noun + noun combinations
Many compounds are fixed or strongly preferred in real English. Learn frequent combinations like coffee cup, school bus, phone charger, and kitchen table.