incommutable vs commutable

incommutable and commutable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
incommutable	No	Yes	No	No
commutable	No	Yes	No	No

incommutable (adjective)	commutable (adjective)
not subject to alteration or change	subject to alteration or change
not interchangeable or able to substitute one for another	capable of being exchanged for another or for something else that is equivalent