cleg vs horsefly

cleg and horsefly both are nouns.

Word	Noun	Adjective	Verb	Adverb
cleg	Yes	No	No	No
horsefly	Yes	No	No	No

As nouns, cleg and horsefly are synonyms defined as:

cleg and horsefly: large swift fly the female of which sucks blood of various animals

Other synonyms of cleg include clegg, horse fly.

cleg (noun)	horsefly (noun)
large swift fly the female of which sucks blood of various animals	large swift fly the female of which sucks blood of various animals
	winged fly parasitic on horses