Popper vs philosopher

Popper and philosopher both are nouns.

Word	Noun	Adjective	Verb	Adverb
Popper	Yes	No	No	No
philosopher	Yes	No	No	No

As nouns, philosopher is a hypernym of Popper; that is, philosopher is a word with a broader meaning than Popper:

Popper: British philosopher (born in Austria) who argued that scientific theories can never be proved to be true, but are tested by attempts to falsify them (1902-1994)
philosopher: a specialist in philosophy

Popper (noun)	philosopher (noun)
British philosopher (born in Austria) who argued that scientific theories can never be proved to be true, but are tested by attempts to falsify them (1902-1994)	a specialist in philosophy
	a wise person who is calm and rational; someone who lives a life of reason with equanimity