How do you say boxing in Japanese?
— ボクシング

Specialized synonyms for boxing in Japanese
fight喧嘩する (けんかする, kenka-suru), 対決 (たいけつする, taiketsu-suru), 戦う / 闘う (たたかう, tatakau)
Examples of category for boxing in Japanese
glove手袋 (てぶくろ, tebukuro)
Derivative terms for boxing in Japanese
box箱 (はこ, hako)