Prokhorov vs physicist

Prokhorov and physicist both are nouns.

Word	Noun	Adjective	Verb	Adverb
Prokhorov	Yes	No	No	No
physicist	Yes	No	No	No

Prokhorov (noun)	physicist (noun)
Russian physicist whose research into ways of moving electrons around atoms led to the development of masers and lasers for producing high-intensity radiation (1916-2002)	a scientist trained in physics