mutant vs being

mutant and being both are nouns.

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

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

mutant: (biology) an organism that has characteristics resulting from chromosomal alteration
being: a living thing that has (or can develop) the ability to act or function independently

Other hypernyms of mutant include organism.

mutant (noun)	being (noun)
an animal that has undergone mutation	a living thing that has (or can develop) the ability to act or function independently
(biology) an organism that has characteristics resulting from chromosomal alteration	the state or fact of existing

mutant (adjective)	being (adjective)
tending to undergo or resulting from mutation