shack vs iglu

shack and iglu both are nouns.

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

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

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

Other hyponyms of shack include igloo, mudhif.

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

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