philosopher vs philosophical

philosopher is a noun but philosophical is not a noun.

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

philosopher (noun)	philosophical (noun)
a specialist in philosophy
a wise person who is calm and rational; someone who lives a life of reason with equanimity

philosopher (adjective)	philosophical (adjective)
	of or relating to philosophy or philosophers
	characterized by the attitude of a philosopher; meeting trouble with level-headed detachment