toll collector vs toll agent

toll collector and toll agent both are nouns.

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

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

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

toll collector (noun)	toll agent (noun)
someone employed to collect tolls	someone employed to collect tolls