tollman vs toll collector

tollman and toll collector both are nouns.

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

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

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

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