formality vs formal

formality and formal both are nouns.

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

formality (noun)	formal (noun)
compliance with formal rules	a gown for evening wear
a manner that strictly observes all forms and ceremonies	a lavish dance requiring formal attire
a requirement of etiquette or custom

formality (adjective)	formal (adjective)
	being in accord with established forms and conventions and requirements (as e.g. of formal dress)
	(of spoken and written language) adhering to traditional standards of correctness and without casual, contracted, and colloquial forms
	refined or imposing in manner or appearance; befitting a royal court
	logically deductive
	represented in simplified or symbolic form
	characteristic of or befitting a person in authority