itch mite vs mite

itch mite and mite both are nouns.

Word	Noun	Adjective	Verb	Adverb
itch mite	Yes	No	No	No
mite	Yes	No	No	No

As nouns, mite is a hypernym of itch mite; that is, mite is a word with a broader meaning than itch mite:

itch mite: whitish mites that attack the skin of humans and other animals
mite: any of numerous very small to minute arachnids often infesting animals or plants or stored foods

itch mite (noun)	mite (noun)
whitish mites that attack the skin of humans and other animals	any of numerous very small to minute arachnids often infesting animals or plants or stored foods
	a slight but appreciable amount