Appearing or performing together (in a film, play, concert, etc.); co-starring or collaborating in a performance. Also used as the verb 共演する.
あの二人は新しい映画で共演する予定だ。
Those two are scheduled to co-star in a new film.
国際音楽祭で世界的に有名なピアニストと共演した。
I performed together with a world-famous pianist at the international music festival.
サッカーの試合では、若手とベテランが共演して勝利を目指した。
In the soccer match, young players and veterans played together aiming for victory.