blubber vs utter

blubber is a noun but utter is not a noun.

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

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

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

blubber (noun)	utter (noun)
excess bodily weight
an insulating layer of fat under the skin of whales and other large marine mammals; used as a source of oil

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

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