salopettes vs ski pants

salopettes and ski pants both are nouns.

Word	Noun	Adjective	Verb	Adverb
salopettes	Yes	No	No	No
ski pants	Yes	No	No	No

As nouns, salopettes and ski pants are synonyms defined as:

salopettes and ski pants: trousers usually of stretch material and kept taut by a strap under the foot, worn for skiing or as a fashion garment.

salopettes (noun)	ski pants (noun)
trousers usually of stretch material and kept taut by a strap under the foot, worn for skiing or as a fashion garment.	trousers usually of stretch material and kept taut by a strap under the foot, worn for skiing or as a fashion garment.