noun
joint struggle; united fight
Refers to a coordinated effort or campaign by multiple groups or individuals, often in political, labor, or social movements.
労働組合は共同闘争を呼びかけた。
The labor union called for a joint struggle.
学生たちは学費値上げ反対の共同闘争を組織した。
The students organized a united fight against the tuition hike.
Abbreviation of 共同闘争, used in similar contexts but more casual and often in slogans or headlines.
Compound of 共同 (joint, cooperative) and 闘争 (struggle, fight).