hollow vs excavate

hollow is a noun but excavate is not a noun.

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

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

As verbs, hollow and excavate are synonyms defined as:

Other synonyms of hollow include dig.

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

hollow (adjective)	excavate (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

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