Displacement

Displacement is a word. It means that something is moved. More specifically, this movement can be:
A displacement vector, from the original position to the current one.
A special move in fencing to avoid an attack.
Forced migration - people having to move to somewhere else, because of violence, war, or another reason.
Displacement (surgery) - When a bone is broken, this refers to moving around the different parts of the broken bone.
Displacement (psychology) - A subconscious defense reaction. 
Displacement (ship) - the amount of water a ship displaces when it floats.