possess vs possessive

possess is not a noun while possessive is a noun.

Word	Noun	Adjective	Verb	Adverb
possess	No	No	Yes	No
possessive	Yes	Yes	No	No

possess (noun)	possessive (noun)
	the case expressing ownership

possess (adjective)	possessive (adjective)
	serving to express or indicate possession
	desirous of owning
	having or showing a desire to control or dominate

possess (verb)	possessive (verb)
have ownership or possession of
have as an attribute, knowledge, or skill
enter into and control, as of emotions or ideas