peep vs utter

peep is a noun but utter is not a noun.

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

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

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

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

Other hypernyms of peep include mouth, speak, talk, verbalise, verbalize.

peep (noun)	utter (noun)
a secret look
the short weak cry of a young bird

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

peep (verb)	utter (verb)
appear as though from hiding	express in speech
make high-pitched sounds	articulate; either verbally or with a cry, shout, or noise
speak in a hesitant and high-pitched tone of voice	express audibly; utter sounds (not necessarily words)
look furtively	put into circulation
cause to come into view