comportment vs dignity

comportment and dignity both are nouns.

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

As nouns, dignity is a hyponym of comportment; that is, dignity is a word with a more specific, narrower meaning than comportment:

Other hyponyms of comportment include gravitas, lordliness.

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