a personal or private matter / (by extension) selfishness

personal, private / secret

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

kingdom (realm ruled by a king and/or queen) / (figuratively): kingdom (realm or conceptual space where something is dominant)

private; mine

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

there's no place like home, home is where you hang your hat

the United Nations

ally; allied nation

(historical) the Allies