igloo vs hutch

igloo and hutch both are nouns.

Word	Noun	Adjective	Verb	Adverb
igloo	Yes	No	No	No
hutch	Yes	No	No	No

As nouns, hutch is a hypernym of igloo; that is, hutch is a word with a broader meaning than igloo:

igloo: an Eskimo hut; usually built of blocks (of sod or snow) in the shape of a dome
hutch: small crude shelter used as a dwelling

Other hypernyms of igloo include hovel, hut, shack, shanty.

igloo (noun)	hutch (noun)
an Eskimo hut; usually built of blocks (of sod or snow) in the shape of a dome	a cage (usually made of wood and wire mesh) for small animals
	small crude shelter used as a dwelling