Sacada. As far as Argentine Tango is concerned this word means: To displace and then to take the place of. It is one of 4 common displacements that happen in the dance. There are, at last count, about 501 (not kidding) possible Sacadas that are available at any one period of time. Tango Topics has detailed only a small number of them: Back Sacadas, Forward Sacadas, Side Sacadas, Close Embrace Sacadas, and the venerable Crossing Sacada Turn.
The Simple Sacada is the most common. It’s where the Lead (or the Follower) steps into space of their partner, next to the trailing foot of their partner.