untransmutable vs incommutable

untransmutable and incommutable both are adjectives.

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

untransmutable (adjective)	incommutable (adjective)
not capable of being changed into something else	not subject to alteration or change
	not interchangeable or able to substitute one for another