bearing vs mien

bearing and mien both are nouns.

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

As nouns, bearing and mien are synonyms defined as:

Other synonyms of bearing include comportment, presence.

bearing (noun)	mien (noun)
a rotating support placed between moving parts to allow them to move easily	dignified manner or conduct
heraldry consisting of a design or image depicted on a shield
dignified manner or conduct
characteristic way of bearing one's body
the direction or path along which something moves or along which it lies
relevant relation or interconnection

bearing (adjective)	mien (adjective)
(of a structural member) withstanding a weight or strain