tuxedo vs formalwear

tuxedo and formalwear both are nouns.

Word	Noun	Adjective	Verb	Adverb
tuxedo	Yes	No	No	No
formalwear	Yes	No	No	No

As nouns, formalwear is a hypernym of tuxedo; that is, formalwear is a word with a broader meaning than tuxedo:

Other hypernyms of tuxedo include evening clothes, evening dress, eveningwear.

tuxedo (noun)	formalwear (noun)
semiformal evening dress for men	attire to wear on formal occasions in the evening