ephemeralness vs ephemerality

ephemeralness and ephemerality both are nouns.

Word	Noun	Adjective	Verb	Adverb
ephemeralness	Yes	No	No	No
ephemerality	Yes	No	No	No

As nouns, ephemeralness and ephemerality are synonyms defined as:

ephemeralness and ephemerality: the property of lasting for a very short time

Other synonyms of ephemeralness include fleetingness.

ephemeralness (noun)	ephemerality (noun)
the property of lasting for a very short time	the property of lasting for a very short time