demonstrability vs provability

demonstrability and provability both are nouns.

Word	Noun	Adjective	Verb	Adverb
demonstrability	Yes	No	No	No
provability	Yes	No	No	No

As nouns, demonstrability and provability are synonyms defined as:

demonstrability and provability: capability of being demonstrated or logically proved

demonstrability (noun)	provability (noun)
capability of being demonstrated or logically proved	capability of being demonstrated or logically proved