Compound

A compound noun, verb, adjective, preposition etc., is one that is made of two or more parts. The meaning of a compound is not always predictable from the meanings of its component parts.

Examples are: bus-driver, girlfriend, put up with, green-hued, looking forward to etc.

• Not every friend who is a girl is your girlfriend.
• Not every board which is black is a blackboard.
• How do you put up with him?