close friend, bosom buddy / crony, chum

a surname

foundation, basis

foundation, basis, basic fundamentals

(publishing, printing) folio (large book made from sheets of Mino washi paper folded in half)

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

private; mine

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

a personal or private matter / (by extension) selfishness

a personal or private matter / selfishness / privacy, secrecy / (women's speech, obsolete) a brother-in-law