reconsideration vs turnabout

reconsideration and turnabout both are nouns.

Word	Noun	Adjective	Verb	Adverb
reconsideration	Yes	No	No	No
turnabout	Yes	No	No	No

As nouns, turnabout is a hypernym of reconsideration; that is, turnabout is a word with a broader meaning than reconsideration:

Other hypernyms of reconsideration include change of mind, flip-flop, reversal, turnaround.

reconsideration (noun)	turnabout (noun)
thinking again about a choice previously made	turning in the opposite direction
a consideration of a topic (as in a meeting) with a view to changing an earlier decision	a decision to reverse an earlier decision