angler vs anglerfish

angler and anglerfish both are nouns.

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

As nouns, angler and anglerfish are synonyms defined as:

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

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

angler (noun)	anglerfish (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