boilersuit vs coverall

boilersuit and coverall both are nouns.

Word	Noun	Adjective	Verb	Adverb
boilersuit	Yes	No	No	No
coverall	Yes	No	No	No

As nouns, coverall is a hypernym of boilersuit; that is, coverall is a word with a broader meaning than boilersuit:

boilersuit: a loose protective coverall or smock worn over ordinary clothing for dirty work
coverall: a loose-fitting protective garment that is worn over other clothing

boilersuit (noun)	coverall (noun)
a loose protective coverall or smock worn over ordinary clothing for dirty work	a loose-fitting protective garment that is worn over other clothing