dignity vs mien

dignity and mien both are nouns.

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

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

Other hypernyms of dignity include bearing, comportment, presence.

dignity (noun)	mien (noun)
the quality of being worthy of esteem or respect	dignified manner or conduct
formality in bearing and appearance
high office or rank or station