specialize in, major in

academic major

sociology

society (group of people sharing culture) / a class, a world of a certain group

scholarship; learning; knowledge

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

Alternative spelling of 私達 (“we; us”)

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

a personal or private matter / (by extension) selfishness

personal, private / secret