A person who you have been friends with for a long time.
old friend
A fellow worker or a colleague.
co-worker
A member of the same class at a school or university.
classmate
When you keep calling or sending e-mails or mesages with a friend...
keep in touch
A person who acts in the place of another person's biological mother.
surregate mother
When you laugh at the same things is because you and your friend...
have the same sense of humor
A son of one's husband or wife by a previous marriage.
stepson
A married man
husband
A person with whom one has had no personal acquaintance.
stranger
The child who is not the natural child of the parents but has become a true child by legal action.
an adopted child
The father of your husband or wife.
father-in-law
A man living off the earnings or gifts of a woman, especially a younger man supported by an older woman.
a gigolo
An intimate or close friend
best friend
A person who makes decisions, exercises authority, dominates, etc.
Boss
A woman who has a continuing, extramarital sexual relationship with one man.
mistress
A person who feels hatred, or malice toward another.
foe or enemy
Someone with whom you went out with and is no longer your girfriend.
ex-girlfriend
A person you know, but who is not usually a close friend.
acquaintance
A member of the same team.
teammate
A fellow worker or member of a staff, department, profession, etc.
a colleague
The wife of one's father by a later marriage.
stepmother