aver vs averment

aver is not a noun while averment is a noun.

Word	Noun	Adjective	Verb	Adverb
aver	No	No	Yes	No
averment	Yes	No	No	No

aver (noun)	averment (noun)
	a declaration that is made emphatically (as if no supporting evidence were necessary)

aver (verb)	averment (verb)
to declare or affirm solemnly and formally as true
report or maintain