growl vs utter

growl is a noun but utter is not a noun.

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

As verbs, utter is a hypernym of growl; that is, utter is a word with a broader meaning than growl:

Other hypernyms of growl include emit, let loose, let out.

growl (noun)	utter (noun)
the sound of growling (as made by animals)

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

growl (verb)	utter (verb)
to utter or emit low dull rumbling sounds	express in speech
	articulate; either verbally or with a cry, shout, or noise
	express audibly; utter sounds (not necessarily words)
	put into circulation