coexistence vs being

coexistence and being both are nouns.

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

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

Other hypernyms of coexistence include beingness, existence, face of the earth.

coexistence (noun)	being (noun)
existing peacefully together	a living thing that has (or can develop) the ability to act or function independently
	the state or fact of existing