mew vs utter

mew is a noun but utter is not a noun.

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

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

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

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

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

mew (noun)	utter (noun)
the common gull of Eurasia and northeastern North America
the sound made by a cat (or any sound resembling this)

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

mew (verb)	utter (verb)
cry like a cat	express in speech
utter a high-pitched cry, as of seagulls	articulate; either verbally or with a cry, shout, or noise
	express audibly; utter sounds (not necessarily words)
	put into circulation