incommutable vs unalterable

incommutable and unalterable both are adjectives.

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

incommutable (adjective)	unalterable (adjective)
not subject to alteration or change	not capable of being changed or altered
not interchangeable or able to substitute one for another	of a sentence; that cannot be changed
	remaining the same for indefinitely long times