change of mind vs reversal

change of mind and reversal both are nouns.

Word	Noun	Adjective	Verb	Adverb
change of mind	Yes	No	No	No
reversal	Yes	No	No	No

As nouns, change of mind and reversal are synonyms defined as:

Other synonyms of change of mind include flip-flop, turnabout, turnaround.

change of mind (noun)	reversal (noun)
a decision to reverse an earlier decision	a change from one state to the opposite state
	the act of reversing the order or place of
	turning in the opposite direction
	a major change in attitude or principle or point of view
	a judgment by a higher court that the judgment of a lower court was incorrect and should be set aside
	a decision to reverse an earlier decision
	turning in an opposite direction or position
	an unfortunate happening that hinders or impedes; something that is thwarting or frustrating