dobson fly vs dobsonfly

dobson fly and dobsonfly both are nouns.

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

As nouns, dobson fly and dobsonfly are synonyms defined as:

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

Other synonyms of dobson fly include Corydalus cornutus, dobson.

dobson fly (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