Nouns

(n)cooperative, co-opa jointly owned commercial enterprise (usually organized by farmers or consumers) that produces and distributes goods and services and is run for the benefit of its owners
(n)cooperativean association formed and operated for the benefit of those using it

Adjectives

(s)concerted, conjunct, conjunctive, cooperative, unitedinvolving the joint activity of two or more“concerted action”, “the conjunct influence of fire and strong wind”, “the conjunctive focus of political opposition”, “a cooperative effort”, “a united effort”
(a)cooperativedone with or working with others for a common purpose or benefit“a cooperative effort”
(s)accommodative, cooperativewilling to adjust to differences in order to obtain agreement