(adjective)
marked by working together and helping each other, usually in order to meet some common goal, especially describing a business or enterprise that is jointly owned and run by members who then share the benefits and profits;
e.g. This will have to be a cooperative effort if it is to work. Our neighborhood maintains a cooperative vegetable garden.
(noun)
an organization, enterprise, or business whose members collectively own and run it and then share the benefits and profits;
e.g. The store is run as a cooperative by the people in the area.