Association

Association can mean:

Voluntary association, a group of individuals who voluntarily enter into an agreement to accomplish a purpose
501(c) non-profit organization
Association (statistics), comes from two variables that are related
Association (psychology), something linked in memory or imagination with a thing or person
The Association, a pop band
Archaeological association, in archaeology, the relationship between objects found together
HMS Association, a Royal Navy ship which sank in 1707
Association (object-oriented programming), in object-oriented programming, a relationship between classes
Association (ecology), a set of organisms which appear together and cover areas in a roughly uniform way
Association (astronomy), combined or co-added group of astronomical exposures
Professional association
Alumni association, an association of former students of a college or university
An industry trade group is also known as a trade association
L'Association, a French comic book publisher