throwback vs being

throwback and being both are nouns.

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

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

throwback: an organism that has the characteristics of a more primitive type of that organism
being: a living thing that has (or can develop) the ability to act or function independently

Other hypernyms of throwback include organism.

throwback (noun)	being (noun)
a reappearance of an earlier characteristic	a living thing that has (or can develop) the ability to act or function independently
an organism that has the characteristics of a more primitive type of that organism	the state or fact of existing

throwback (adjective)	being (adjective)
characteristic of an atavist