engineer vs Casey Jones

engineer and Casey Jones both are nouns.

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

engineer (noun)	Casey Jones (noun)
a person who uses scientific knowledge to solve practical problems	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)
the operator of a railway locomotive

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