Nouns

(n)turnaround, turnaround timetime need to prepare a vessel or ship for a return trip
(n)reversal, change of mind, flip-flop, turnabout, turnarounda decision to reverse an earlier decision
(n)turnaroundan area sufficiently large for a vehicle to turn around
(n)turnaround, turnroundact or process of unloading and loading and servicing a vessel or aircraft for a return trip
(n)reversion, reverse, reversal, turnabout, turnaroundturning in the opposite direction