policy change vs volte-face

policy change and volte-face both are nouns.

Word	Noun	Adjective	Verb	Adverb
policy change	Yes	No	No	No
volte-face	Yes	No	No	No

As nouns, policy change and volte-face are synonyms defined as:

policy change and volte-face: a major change in attitude or principle or point of view

Other synonyms of policy change include about-face, reversal.

policy change (noun)	volte-face (noun)
a major change in attitude or principle or point of view	a major change in attitude or principle or point of view