types:
cooperative
an association formed and operated for the benefit of those using it
family,
fellowship
an association of people who share common beliefs or activities
conference,
league
an association of sports teams that organizes matches for its members
Fabian Society
an association of British socialists who advocate gradual reforms within the law leading to democratic socialism
legion
association of ex-servicemen
institute
an association organized to promote art or science or education
sisterhood,
sistership
an association or society of women who are linked together by a common religion or trade or interest
koinonia
Christian fellowship or communion with God or with fellow Christians; said in particular of the early Christian community
athenaeum,
atheneum
a literary or scientific association for the promotion of learning
bookclub
a club that people join in order to buy selected books at reduced prices
chapter
a local branch of some fraternity or association
investors club
a club of small investors who buy and sell securities jointly
jockey club
a club to promote and regulate horse racing
slate club
a group of people who save money in a common fund for a specific purpose (usually distributed at Christmas)
sorority
a social club for female undergraduates
Ivy League
a league of universities and colleges in the northeastern United States that have a reputation for scholastic achievement and social prestige
service club
a club of professional or business people organized for their coordination and active in public services
cartel,
combine,
corporate trust,
trust
a consortium of independent organizations formed to limit competition by controlling the production and distribution of a product or service
nest
a gang of people (criminals or spies or terrorists) assembled in one locality