potato moth vs gelechiid moth

potato moth and gelechiid moth both are nouns.

Word	Noun	Adjective	Verb	Adverb
potato moth	Yes	No	No	No
gelechiid moth	Yes	No	No	No

As nouns, gelechiid moth is a hypernym of potato moth; that is, gelechiid moth is a word with a broader meaning than potato moth:

potato moth: greyish-brown moth whose larva is the potato tuberworm
gelechiid moth: small slender-winged moths whose larvae are agricultural pests

Other hypernyms of potato moth include gelechiid.

potato moth (noun)	gelechiid moth (noun)
greyish-brown moth whose larva is the potato tuberworm	small slender-winged moths whose larvae are agricultural pests