unbecomingness vs appearance

unbecomingness and appearance both are nouns.

Word	Noun	Adjective	Verb	Adverb
unbecomingness	Yes	No	No	No
appearance	Yes	No	No	No

As nouns, appearance is a hypernym of unbecomingness; that is, appearance is a word with a broader meaning than unbecomingness:

unbecomingness: The state of not being flattering, attractive or appropriate.
appearance: outward or visible aspect of a person or thing

Other hypernyms of unbecomingness include visual aspect, ineptness, unsuitability, unsuitableness.

unbecomingness (noun)	appearance (noun)
the quality of being unbecoming	the act of appearing in public view
The state of not being flattering, attractive or appropriate.	formal attendance (in court or at a hearing) of a party in an action
	pretending that something is the case in order to make a good impression
	outward or visible aspect of a person or thing
	a mental representation
	the event of coming into sight