catacomb vs tunnel

catacomb and tunnel both are nouns.

Word	Noun	Adjective	Verb	Adverb
catacomb	Yes	No	No	No
tunnel	Yes	No	Yes	No

As nouns, tunnel is a hypernym of catacomb; that is, tunnel is a word with a broader meaning than catacomb:

catacomb: an underground tunnel with recesses where bodies were buried (as in ancient Rome)
tunnel: a passageway through or under something, usually underground (especially one for trains or cars)

catacomb (noun)	tunnel (noun)
an underground tunnel with recesses where bodies were buried (as in ancient Rome)	a passageway through or under something, usually underground (especially one for trains or cars)
	a hole made by an animal, usually for shelter

catacomb (verb)	tunnel (verb)
	force a way through
	move through by or as by digging