gabardine vs coverall

gabardine and coverall both are nouns.

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

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

gabardine: a loose coverall (coat or frock) reaching down to the ankles
coverall: a loose-fitting protective garment that is worn over other clothing

gabardine (noun)	coverall (noun)
a firm durable fabric with a twill weave	a loose-fitting protective garment that is worn over other clothing
a loose coverall (coat or frock) reaching down to the ankles
(usually in the plural) trousers made of flannel or gabardine or tweed or white cloth