dobson vs dobsonfly

dobson and dobsonfly both are nouns.

Word	Noun	Adjective	Verb	Adverb
dobson	Yes	No	No	No
dobsonfly	Yes	No	No	No

As nouns, dobson and dobsonfly are synonyms defined as:

dobson and dobsonfly: large soft-bodied insect having long slender mandibles in the male; aquatic larvae often used as bait

Other synonyms of dobson include Corydalus cornutus, dobson fly.

dobson (noun)	dobsonfly (noun)
large soft-bodied insect having long slender mandibles in the male; aquatic larvae often used as bait	large soft-bodied insect having long slender mandibles in the male; aquatic larvae often used as bait
large brown aquatic larva of the dobsonfly; used as fishing bait