utterance vs utter

utterance is a noun but utter is not a noun.

Word	Noun	Adjective	Verb	Adverb
utterance	Yes	No	No	No
utter	No	Yes	Yes	No

utterance (noun)	utter (noun)
the use of uttered sounds for auditory communication

utterance (adjective)	utter (adjective)
	complete and absolute
	without qualification; used informally as (often pejorative) intensifiers

utterance (verb)	utter (verb)
	express in speech
	articulate; either verbally or with a cry, shout, or noise
	express audibly; utter sounds (not necessarily words)
	put into circulation