lordliness vs mien

lordliness and mien both are nouns.

Word	Noun	Adjective	Verb	Adverb
lordliness	Yes	No	No	No
mien	Yes	No	No	No

As nouns, mien is a hypernym of lordliness; that is, mien is a word with a broader meaning than lordliness:

Other hypernyms of lordliness include bearing, comportment, presence.

lordliness (noun)	mien (noun)
formality in bearing and appearance	dignified manner or conduct
overbearing pride evidenced by a superior manner toward inferiors