Cases of word usage

1) trousers made of corduroy (cords)

2) the place where a pair of trousers or a person's legs meet at the top (crotch)

3) strong cotton trousers with a front flap attached by straps over the shoulders (dungarees)

4) trousers (usually made of blue demin) worn informally (jeans)

5) loose fitting trousers with shoulder straps, as worn by workmen (overalls)

6) a loose-fitting jacket and trousers for sleeping in (pajamas)

7) short trousers ending above the knees, as worn by children, by adults for games etc (shorts)