C. We often use two nouns together to show that one thing is a part of something else, but we do not use a possessive form for these things (e.g. the village church; the car door; the kitchen window; the chair leg; my coat pocket; London residents)
C1. We can use noun modifiers to show what something is made of (e.g. a gold watch; a leather purse; a metal box)
a. use noun modifiers with nouns ending in ‘-er’ and ‘-ing’ (e.g.an office worker; a jewellery maker; a potato peeler; a shopping list; a swimming lesson; a walking holiday)
b. use measurements, age or value as noun modifiers (e.g. a thirty kilogram suitcase; a two minute rest; a five thousand euro platinum watch; a fifty kilometre journey)
c. often put two nouns together and readers/listeners have work out what they mean (e.g. an ice bucket = a bucket to keep ice in; an ice cube = a cube made of ice; an ice breaker = a ship which breaks ice; the ice age = the time when much of the Earth was covered in ice)
d. Sometimes we find more than two nouns together (e.g. London office workers; grammar practice exercises)
C. Noun modifiers come after adjectives (e.g. The old newspaper seller. A tiring fifty kilometre journey.)