substitutability vs commutability

substitutability and commutability both are nouns.

Word	Noun	Adjective	Verb	Adverb
substitutability	Yes	No	No	No
commutability	Yes	No	No	No

As nouns, substitutability and commutability are synonyms defined as:

substitutability and commutability: exchangeability by virtue of being replaceable

Other synonyms of substitutability include replaceability.

substitutability (noun)	commutability (noun)
exchangeability by virtue of being replaceable	the quality of being commutable
	exchangeability by virtue of being replaceable