iglu vs shack

iglu and shack both are nouns.

Word	Noun	Adjective	Verb	Adverb
iglu	Yes	No	No	No
shack	Yes	No	Yes	No

As nouns, shack is a hypernym of iglu; that is, shack is a word with a broader meaning than iglu:

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

Other hypernyms of iglu include hovel, hut, hutch, shanty.

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

iglu (verb)	shack (verb)
	move, proceed, or walk draggingly or slowly
	make one's home in a particular place or community