Sir Geoffrey Wilkinson vs chemist

Sir Geoffrey Wilkinson and chemist both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sir Geoffrey Wilkinson	Yes	No	No	No
chemist	Yes	No	No	No

Sir Geoffrey Wilkinson (noun)	chemist (noun)
English chemist honored for his research on pollutants in car exhausts (born in 1921)	a scientist who specializes in chemistry
	a health professional trained in the art of preparing and dispensing drugs