hollow vs enclosed space

hollow and enclosed space both are nouns.

Word	Noun	Adjective	Verb	Adverb
hollow	Yes	Yes	Yes	No
enclosed space	Yes	No	No	No

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

Other hypernyms of hollow include cavity.

hollow (noun)	enclosed space (noun)
a depression hollowed out of solid matter	space that is surrounded by something
a small valley between mountains
a cavity or space in something

hollow (adjective)	enclosed space (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)	enclosed space (verb)
remove the interior of
remove the inner part or the core of