moth miller vs moth

moth miller and moth both are nouns.

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

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

moth miller: any of various moths that have powdery wings
moth: typically crepuscular or nocturnal insect having a stout body and feathery or hairlike antennae

moth miller (noun)	moth (noun)
any of various moths that have powdery wings	typically crepuscular or nocturnal insect having a stout body and feathery or hairlike antennae