共同

(1)act of working jointly; "they worked either in collaboration or independently"

(2)共同で働く行為

(3)a set containing all and only the members of two or more given sets; "let C be the union of the sets A and B"

(4)特定の2つ以上の組の要素のみをすべて含む1つの組

(5)act of cooperating traitorously with an enemy that is occupying your country

(6)裏切ってあなたの国を占領している敵と協力する行為