asserter vs assert

asserter is a noun but assert is not a noun.

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

asserter (noun)	assert (noun)
someone who claims to speak the truth

asserter (verb)	assert (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