physicist vs Albert Einstein

physicist and Albert Einstein both are nouns.

Word	Noun	Adjective	Verb	Adverb
physicist	Yes	No	No	No
Albert Einstein	Yes	No	No	No

physicist (noun)	Albert Einstein (noun)
a scientist trained in physics	physicist born in Germany who formulated the special theory of relativity and the general theory of relativity; Einstein also proposed that light consists of discrete quantized bundles of energy (later called photons) (1879-1955)