sweatsuit vs sweat suit

sweatsuit and sweat suit both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweatsuit	Yes	No	No	No
sweat suit	Yes	No	No	No

As nouns, sweatsuit and sweat suit are synonyms defined as:

sweatsuit and sweat suit: garment consisting of sweat pants and a sweatshirt

Other synonyms of sweatsuit include sweats, workout suit.

sweatsuit (noun)	sweat suit (noun)
garment consisting of sweat pants and a sweatshirt	garment consisting of sweat pants and a sweatshirt