titular vs formal

titular is not a noun while formal is a noun.

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

titular (noun)	formal (noun)
	a gown for evening wear
	a lavish dance requiring formal attire

titular (adjective)	formal (adjective)
of or associated with or bearing a title signifying nobility	being in accord with established forms and conventions and requirements (as e.g. of formal dress)
of or pertaining to the title of a work of art	(of spoken and written language) adhering to traditional standards of correctness and without casual, contracted, and colloquial forms
of or bearing a title signifying status or function	refined or imposing in manner or appearance; befitting a royal court
of or relating to a legal title to something	logically deductive
existing in name only	represented in simplified or symbolic form
	characteristic of or befitting a person in authority