dual / duel
Twofold versus a fight.
Dual means twofold: dual controls. A duel is a formal fight between two people. Do not write dual for the fight.
Examples
Use dual locks
Use a pistol duel
Avoid a pistol dual
Twofold versus a fight.
Dual means twofold: dual controls. A duel is a formal fight between two people. Do not write dual for the fight.
Use dual locks
Use a pistol duel
Avoid a pistol dual