clack vs utter

clack is a noun but utter is not a noun.

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

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

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

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

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

clack (noun)	utter (noun)
a simple valve with a hinge on one side; allows fluid to flow in only one direction
a sharp abrupt noise as if two objects hit together; may be repeated

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

clack (verb)	utter (verb)
speak (about unimportant matters) rapidly and incessantly	express in speech
make a clucking sounds, characteristic of hens	articulate; either verbally or with a cry, shout, or noise
make a rattling sound	express audibly; utter sounds (not necessarily words)
	put into circulation