caddis-fly vs caddis fly

caddis-fly and caddis fly both are nouns.

Word	Noun	Adjective	Verb	Adverb
caddis-fly	Yes	No	No	No
caddis fly	Yes	No	No	No

As nouns, caddis-fly and caddis fly are synonyms defined as:

caddis-fly and caddis fly: small moth-like insect having two pairs of hairy membranous wings and aquatic larvae

Other synonyms of caddis-fly include caddice-fly, caddice fly.

caddis-fly (noun)	caddis fly (noun)
small moth-like insect having two pairs of hairy membranous wings and aquatic larvae	small moth-like insect having two pairs of hairy membranous wings and aquatic larvae