habitation vs den

habitation and den both are nouns.

Word	Noun	Adjective	Verb	Adverb
habitation	Yes	No	No	No
den	Yes	No	No	No

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

Other hyponyms of habitation include aerie, aery, eyrie, eyry, lair.

habitation (noun)	den (noun)
the act of dwelling in or living permanently in a place (said of both animals and men)	a room that is comfortable and secluded
housing that someone is living in	a unit of 8 to 10 cub scouts
the native habitat or home of an animal or plant	the habitation of wild animals
	a hiding place; usually a remote place used by outlaws