Cases of word usage

1) a person who one knows but not as well as a friend (acquaintance)

2) to be a friend to (especially a person who needs help) (befriend)

3) a close friend (especially used by boys) (chum)

4) of the same kind, class etc; a man or a boy; a friend (fellow)

5) acting or ready to act as a friend (friendly)

6) close and familiar; to have sexual intercourse; most private and personal; a close friend (intimate)

7) a friend (pal)

8) a secret word or phrase which enables a person to be recognized as a friend and not an enemy (password)

9) any one of a group of long, legless reptiles, some of which are poisonous; an insincere, harmful person who pretends to be a friend (snake)

10) (used to call a greeting to a friend etc) (yoo-hoo)