noun, noun or participle which takes 'suru', intransitive verb
match; game; battle; competition
Used for competitive confrontations: sports matches, games, battles, or any head-to-head contest. Often used with する to mean 'to compete against' or 'to face off'.
明日、隣の高校とサッカーの対戦がある。
Tomorrow we have a soccer match against the neighboring high school.
決勝で強豪チームと対戦することになった。
We ended up facing a strong team in the finals.
このゲームはオンラインで世界中のプレイヤーと対戦できる。
In this game you can compete against players from all over the world online.