troller vs angler

troller and angler both are nouns.

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

As nouns, troller and angler are synonyms defined as:

troller (noun)	angler (noun)
a fisherman who uses a hook and line	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