toll collector vs employee

toll collector and employee both are nouns.

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

As nouns, employee is a hypernym of toll collector; that is, employee is a word with a broader meaning than toll collector:

toll collector (noun)	employee (noun)
someone employed to collect tolls	a worker who is hired to perform a job