a group of people joined together for some common purpose
group with common interest or pursuit
Cases of word usage
1) the state of association or connection (alliance)
2) a (long, narrow) piece of hard material; a room, counter, where alcoholic drinks are sold; Lawyers Association (bar)
3) the free association of independent states that were formerly colonies and dominations of Great Britain (commonwealth)
4) an association (of business, banks etc) (consortium)
5) a working association between two or more people, committee etc; a sexual relationship between unmarried people (liaison)
6) a business association that supplies articles, cartoons etc to magazines; a group of businesses associated for a common purpose (syndicate)