assert vs assertive

assert is not an adjective while assertive is an adjective.

Word	Noun	Adjective	Verb	Adverb
assert	No	No	Yes	No
assertive	No	Yes	No	No

assert (adjective)	assertive (adjective)
	aggressively self-assured

assert (verb)	assertive (verb)
postulate positively and assertively
to declare or affirm solemnly and formally as true
state categorically
insist on having one's opinions and rights recognized