elaterid vs firefly

elaterid and firefly both are nouns.

Word	Noun	Adjective	Verb	Adverb
elaterid	Yes	No	No	No
firefly	Yes	No	No	No

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

Other hyponyms of elaterid include click beetle, skipjack, snapping beetle, fire beetle, Pyrophorus noctiluca.

elaterid (noun)	firefly (noun)
any of various widely distributed beetles	nocturnal beetle common in warm regions having luminescent abdominal organs
	tropical American click beetle having bright luminous spots