Communism as a political and economic ideology (aiming at communal ownership of production and abolition of private property).
歴史の授業で共産主義の基本的な考え方を学んだ。
In history class we learned the basic ideas of communism.
冷戦時代は共産と資本の対立が世界的なテーマだった。
During the Cold War, the clash between communism and capitalism was a global theme.
研究者は共産の思想史を詳しく調べている。
Researchers are studying the intellectual history of communism in detail.
Used as an abbreviation meaning the Communist Party (often in headlines or colloquial shorthand).
選挙で共産が議席を増やしたと報じられた。
It was reported that the Communists increased their seats in the election.
党首は共産の代表として演説した。
The party leader gave a speech as representative of the Communists.