gajni

Gajni and venki split the English word "win" between them, and mixing them up is the trap here. You gajni the prize, the game, the money, the thing you walk away with; you venki the opponent you beat. So li venkis min means he beat me, while li gajnis la ludon means he won the match. The opposite is perdi, and the noun gajno covers both a win and a profit. Gajni is transitive throughout, so the object always takes -n.