benzoic acid vs carboxylic acid

benzoic acid and carboxylic acid both are nouns.

Word	Noun	Adjective	Verb	Adverb
benzoic acid	Yes	No	No	No
carboxylic acid	Yes	No	No	No

As nouns, carboxylic acid is a hypernym of benzoic acid; that is, carboxylic acid is a word with a broader meaning than benzoic acid:

benzoic acid: a white crystalline solid occurring in many resins
carboxylic acid: an organic acid characterized by one or more carboxyl groups

benzoic acid (noun)	carboxylic acid (noun)
a white crystalline solid occurring in many resins	an organic acid characterized by one or more carboxyl groups