partnership

noun

1 the close partnership between Britain and the US:

cooperation, association, collaboration, coalition, alliance, union, compact, league, confederation, co-partnership, affiliation, relationship, fellowship, connection;

rare consociation.

2 the partnership now owns twenty-two department stores:

company, firm, business, corporation, organization, association, consortium, establishment, house, cooperative, concern, operation, undertaking, conglomerate, combine, syndicate;

informal outfit, set-up.

partnership Oxford Dictionary of English