excavate vs hollow

excavate is not a noun while hollow is a noun.

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

As verbs, excavate and hollow are synonyms defined as:

Other synonyms of excavate include dig.

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

Other hypernyms of excavate include core out, hollow out.

excavate (noun)	hollow (noun)
	a depression hollowed out of solid matter
	a small valley between mountains
	a cavity or space in something

excavate (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

excavate (verb)	hollow (verb)
find by digging in the ground	remove the interior of
remove the inner part or the core of	remove the inner part or the core of
form by hollowing
recover through digging