to battle, to fight, to wage war / to compete (in a match, for example) / to contend (for one's own interests) / (figuratively) to get through with one's sufferings or difficulties

competition, rivalry / Alternative spelling of 競り合い (seriai)

to compete

business

(chiefly women's speech) first person singular pronoun: I, me

business class

business opportunity

business hotel

(polite) first-person singular pronoun: I, me

a personal or private matter / (by extension) selfishness