cavern vs hollow

cavern and hollow both are nouns.

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

As verbs, hollow is a hypernym of cavern; that is, hollow is a word with a broader meaning than cavern:

Other hypernyms of cavern include core out, hollow out.

cavern (noun)	hollow (noun)
a large cave or a large chamber in a cave	a depression hollowed out of solid matter
any large dark enclosed space	a small valley between mountains
	a cavity or space in something

cavern (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

cavern (verb)	hollow (verb)
hollow out as if making a cavern	remove the interior of
	remove the inner part or the core of