formality vs abidance

formality and abidance both are nouns.

Word	Noun	Adjective	Verb	Adverb
formality	Yes	No	No	No
abidance	Yes	No	No	No

As nouns, abidance is a hypernym of formality; that is, abidance is a word with a broader meaning than formality:

Other hypernyms of formality include compliance, conformation, conformity.

formality (noun)	abidance (noun)
compliance with formal rules	the act of abiding (enduring without yielding)
a manner that strictly observes all forms and ceremonies	the act of dwelling in a place
a requirement of etiquette or custom	acting according to certain accepted standards