bentonite vs clay

bentonite and clay both are nouns.

Word	Noun	Adjective	Verb	Adverb
bentonite	Yes	No	No	No
clay	Yes	No	No	No

As nouns, clay is a hypernym of bentonite; that is, clay is a word with a broader meaning than bentonite:

bentonite: an absorbent aluminum silicate clay formed from volcanic ash
clay: a very fine-grained soil that is plastic when moist but hard when fired

bentonite (noun)	clay (noun)
an absorbent aluminum silicate clay formed from volcanic ash	the dead body of a human being
	a very fine-grained soil that is plastic when moist but hard when fired
	water soaked soil; soft wet earth