toll collector vs toller

toll collector and toller both are nouns.

Word	Noun	Adjective	Verb	Adverb
toll collector	Yes	No	No	No
toller	Yes	No	No	No

As nouns, toll collector and toller are synonyms defined as:

Other synonyms of toll collector include toll agent, toll taker, tollgatherer, tollkeeper, tollman.

toll collector (noun)	toller (noun)
someone employed to collect tolls	someone employed to collect tolls
	a person who rings church bells (as for summoning the congregation)