E. 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: the village church; the car door; the kitchen window; the chair leg; my coat pocket; London residents
E1. We can use Noun Modifiers to show:
a. what something is made of: a gold watch; a leather purse; a metal box, etc.
b. use noun modifiers with nouns ending in ‘-er’ and ‘-ing’: an office worker; a jewellery maker; a potato peeler; a shopping list; a swimming lesson; a walking holiday, etc.
c. use measurements, age or value as noun modifiers: a thirty kilogram suitcase; a two minute rest; a five thousand euro platinum watch; a fifty kilometre journey, etc.
d. often put two nouns together: an ice bucket (= a bucket to keep ice in), etc.
e. others are: London office workers; grammar practice exercises, etc.
E2. Noun modifiers come after adjectives (e.g. The old newspaper seller.)
Today's Idiom:
A bird in the hand is worth two in the bush: Having something that is certain is much better than taking a risk for more, because chances are you might lose everything.
Example: If I were you, I would accept the job. It might not be the best opportunity for you at this moment, but a bird in the hand is worth two in the bush.