condescension vs condescendingness

condescension and condescendingness both are nouns.

Word	Noun	Adjective	Verb	Adverb
condescension	Yes	No	No	No
condescendingness	Yes	No	No	No

As nouns, condescension and condescendingness are synonyms defined as:

condescension and condescendingness: affability to your inferiors and temporary disregard for differences of position or rank

condescension (noun)	condescendingness (noun)
the trait of displaying arrogance by patronizing those considered inferior	affability to your inferiors and temporary disregard for differences of position or rank
affability to your inferiors and temporary disregard for differences of position or rank
a communication that indicates lack of respect by patronizing the recipient