As nouns the difference between troller and droller
is that troller
is one who fishes by trolling while droller
is (obsolete) a jester.
As an adjective droller is
Other Comparisons: What's the difference?
One who fishes by trolling.
An engine-powered fishing boat, used for moving slowly while fishing lines drag behind, sometimes able to sail in shallow water.
(obsolete) A jester.