noun
Refers to the ideology or system of communism. Often used in compounds like 共産主義.
共産主義はマルクスの思想に基づいている。
Communism is based on the ideas of Marx.
noun
Abbreviation of 共産党. Used in political contexts to refer to a communist party, especially the Japanese Communist Party.
See also: 共産党
彼は共産の候補者として選挙に出た。
He ran in the election as a Communist Party candidate.