Answer:
Energy
Step-by-step explanation:
The answe is "work transfers energy between objects".
There are different types of energy. Work is one of them and is a type of energy in transit.
So work is energy that is exchanged between objects or systems.
When work is done energy is tranferred by mechanical means (if the means are not mechanicals, the type of energy transferred is called heat), for example when pushing a box, energy is transferred to it so that it can move.