imperishability vs imperishingness

imperishability and imperishingness both are nouns.

Word	Noun	Adjective	Verb	Adverb
imperishability	Yes	No	No	No
imperishingness	Yes	No	No	No

As nouns, imperishability and imperishingness are synonyms defined as:

imperishability and imperishingness: the property of being resistant to decay

Other synonyms of imperishability include imperishableness.

imperishability (noun)	imperishingness (noun)
the property of being resistant to decay	the property of being resistant to decay