1. association; union; guild
Wikipedia definition
2. Voluntary associationA voluntary association or union (also sometimes called a voluntary organization, unincorporated association, or just an association) is a group of individuals who enter into an agreement as volunteers to form a body to accomplish a purpose. Strictly speaking, in many jurisdictions no formalities are necessary to start an association. In some jurisdictions, there is a minimum for the number of persons starting an association.
Read “Voluntary association” on English Wikipedia
Read “組合” on Japanese Wikipedia
Read “Voluntary association” on DBpedia
Other forms
組み合い 【くみあい】


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