a subject (a particular area of study)

academic major

specialize in, major in

(Confucianism) Great Learning

a university; a college

mental state, mentality / psychology

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

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

a personal or private matter / (by extension) selfishness

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