Casey Jones vs engineer

Casey Jones and engineer both are nouns.

Word	Noun	Adjective	Verb	Adverb
Casey Jones	Yes	No	No	No
engineer	Yes	No	Yes	No

Casey Jones (noun)	engineer (noun)
United States railroad engineer who died trying to stop his train from crashing into another train; a friend wrote a famous ballad describing the incident (1864-1900)	a person who uses scientific knowledge to solve practical problems
	the operator of a railway locomotive

Casey Jones (verb)	engineer (verb)
	plan and direct (a complex undertaking)
	design as an engineer