physicist vs Oliver Heaviside

physicist and Oliver Heaviside both are nouns.

Word	Noun	Adjective	Verb	Adverb
physicist	Yes	No	No	No
Oliver Heaviside	Yes	No	No	No

physicist (noun)	Oliver Heaviside (noun)
a scientist trained in physics	English physicist and electrical engineer who helped develop telegraphic and telephonic communications; in 1902 (independent of A. E. Kennelly) he suggested the existence of an atmospheric layer that reflects radio waves back to earth (1850-1925)