utterer vs being

utterer and being both are nouns.

Word	Noun	Adjective	Verb	Adverb
utterer	Yes	No	No	No
being	Yes	No	No	No

As nouns, being is a hypernym of utterer; that is, being is a word with a broader meaning than utterer:

utterer: an organism that can utter vocal sounds
being: a living thing that has (or can develop) the ability to act or function independently

Other hypernyms of utterer include organism.

utterer (noun)	being (noun)
someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)	a living thing that has (or can develop) the ability to act or function independently
someone who circulates forged banknotes or counterfeit coins	the state or fact of existing
an organism that can utter vocal sounds