arctiid vs moth

arctiid and moth both are nouns.

Word	Noun	Adjective	Verb	Adverb
arctiid	Yes	No	No	No
moth	Yes	No	No	No

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

arctiid: stout-bodied broad-winged moth with conspicuously striped or spotted wings; larvae are hairy caterpillars
moth: typically crepuscular or nocturnal insect having a stout body and feathery or hairlike antennae

arctiid (noun)	moth (noun)
stout-bodied broad-winged moth with conspicuously striped or spotted wings; larvae are hairy caterpillars	typically crepuscular or nocturnal insect having a stout body and feathery or hairlike antennae