wireworm vs larva

wireworm and larva both are nouns.

Word	Noun	Adjective	Verb	Adverb
wireworm	Yes	No	No	No
larva	Yes	No	No	No

As nouns, larva is a hypernym of wireworm; that is, larva is a word with a broader meaning than wireworm:

wireworm: wormlike larva of various elaterid beetles; feeds on roots of many crop plants
larva: the immature free-living form of most invertebrates and amphibians and fish which at hatching from the egg is fundamentally unlike its parent and must metamorphose

wireworm (noun)	larva (noun)
wormlike larva of various elaterid beetles; feeds on roots of many crop plants	the immature free-living form of most invertebrates and amphibians and fish which at hatching from the egg is fundamentally unlike its parent and must metamorphose