hollow vs burrow

hollow and burrow both are nouns.

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

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

hollow (noun)	burrow (noun)
a depression hollowed out of solid matter	a hole made by an animal, usually for shelter
a small valley between mountains
a cavity or space in something

hollow (adjective)	burrow (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)	burrow (verb)
remove the interior of	move through by or as by digging
remove the inner part or the core of