swimwear vs maillot

swimwear and maillot both are nouns.

Word	Noun	Adjective	Verb	Adverb
swimwear	Yes	No	No	No
maillot	Yes	No	No	No

As nouns, maillot is a hyponym of swimwear; that is, maillot is a word with a more specific, narrower meaning than swimwear:

Other hyponyms of swimwear include bikini, two-piece, tank suit, bathing trunks, swimming trunks.

swimwear (noun)	maillot (noun)
tight fitting garment worn for swimming	tights for dancers or gymnasts
	a woman's one-piece bathing suit