philosophy vs discursive

philosophy is a noun but discursive is not a noun.

Word	Noun	Adjective	Verb	Adverb
philosophy	Yes	No	No	No
discursive	No	Yes	No	No

philosophy (noun)	discursive (noun)
the rational investigation of questions about existence and knowledge and ethics
a belief (or system of beliefs) accepted as authoritative by some group or school
any personal belief about how to live or how to deal with a situation

philosophy (adjective)	discursive (adjective)
	(of e.g. speech and writing) tending to depart from the main point or cover a wide range of subjects
	proceeding to a conclusion by reason or argument rather than intuition