burrow vs warren

burrow and warren both are nouns.

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

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

Other hyponyms of burrow include rabbit warren.

burrow (noun)	warren (noun)
a hole made by an animal, usually for shelter	a colony of rabbits
	an overcrowded residential area
	a series of connected underground tunnels occupied by rabbits

burrow (verb)	warren (verb)
move through by or as by digging