• 戦争せんそう — war
• 決戦けっせん — decisive battle
• 挑戦ちょうせん — challenge
• 戦士せんし — warrior
• 戦場せんじょう — battlefield
• 戦略せんりゃく — strategy
• 戦績せんせき — battle record

戦 is one of the most recognizable kanji for combat or conflict. It appears in compounds related to real wars and also symbolic struggles like rivalry, strategy, or determination.

In modern contexts, it is widely used metaphorically — in sports, business, and personal challenges.

彼かれは 最後さいごの戦たたかいに 挑いどんだ。
He took on the final battle.

人生じんせいは 戦たたかいの 連続れんぞくだ。
Life is a series of battles.