cavity vs hollow

cavity and hollow both are nouns.

Word	Noun	Adjective	Verb	Adverb
cavity	Yes	No	No	No
hollow	Yes	Yes	Yes	No

As nouns, hollow is a hypernym of cavity; that is, hollow is a word with a broader meaning than cavity:

Other hypernyms of cavity include hole.

As nouns, hollow is a hyponym of cavity; that is, hollow is a word with a more specific, narrower meaning than cavity:

Other hyponyms of cavity include pocket, pouch, sac, sack.

cavity (noun)	hollow (noun)
(anatomy) a natural hollow or sinus within the body	a depression hollowed out of solid matter
a sizeable hole (usually in the ground)	a small valley between mountains
soft decayed area in a tooth; progressive decay can lead to the death of a tooth	a cavity or space in something
space that is surrounded by something

cavity (adjective)	hollow (adjective)
	not solid; having a space or gap or cavity
	lacking in substance or character
	devoid of significance or force
	as if echoing in a hollow space

cavity (verb)	hollow (verb)
	remove the interior of
	remove the inner part or the core of