dwelling vs housing

dwelling and housing both are nouns.

Word	Noun	Adjective	Verb	Adverb
dwelling	Yes	No	No	No
housing	Yes	No	No	No

As nouns, housing is a hypernym of dwelling; that is, housing is a word with a broader meaning than dwelling:

Other hypernyms of dwelling include living accommodations, lodging.

dwelling (noun)	housing (noun)
housing that someone is living in	structures collectively in which people are housed
	a protective cover designed to contain or support a mechanical component
	stable gear consisting of a decorated covering for a horse, especially (formerly) for a warhorse