philosopher vs doer

philosopher and doer both are nouns.

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

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

philosopher: a wise person who is calm and rational; someone who lives a life of reason with equanimity
doer: a person who acts and gets things done

Other hypernyms of philosopher include actor, worker.

philosopher (noun)	doer (noun)
a specialist in philosophy	a person who acts and gets things done
a wise person who is calm and rational; someone who lives a life of reason with equanimity