untransmutable vs inconvertible

untransmutable and inconvertible both are adjectives.

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

As adjectives, untransmutable and inconvertible are synonyms defined as:

untransmutable and inconvertible: not capable of being changed into something else

untransmutable (adjective)	inconvertible (adjective)
not capable of being changed into something else	used especially of currencies; incapable of being exchanged for or replaced by another currency of equal value
	not capable of being changed into something else