being vs beingness

being and beingness both are nouns.

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

As nouns, being and beingness are synonyms defined as:

Other synonyms of being include existence, face of the earth.

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