angler vs angler fish

angler and angler fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
angler	Yes	No	No	No
angler fish	Yes	No	No	No

As nouns, angler and angler fish are synonyms defined as:

angler and angler fish: fishes having large mouths with a wormlike filament attached for luring prey

Other synonyms of angler include allmouth, anglerfish, goosefish, Lophius Americanus, lotte, monkfish.

angler (noun)	angler fish (noun)
fishes having large mouths with a wormlike filament attached for luring prey	fishes having large mouths with a wormlike filament attached for luring prey
a fisherman who uses a hook and line
a scheming person; someone who schemes to gain an advantage