That ability is known as elasticity.
elasticity
Elasticity describes the ability of a solid to return to its original shape after being deformed or stretched.
Elasticity refers to the ability of a material to return to its original shape after being stretched or compressed. Flexibility, on the other hand, refers to the ability to bend easily without breaking. In short, elasticity is about how much a material can stretch and return, while flexibility is about how easily a material can bend.
Elastic Deformation
Contractility - the ability of a muscle to shorten. Extensibility - the ability to lengthen. Elasticity - the ability to return to their original shape. And, Excitability - can be triggered by electrical stimulation.
the physical property of a material that can return to its original shape or position after deformation that does not exceed its elastic
Inelastic
When a solid is stretched or compressed beyond the point that it can return to its original shape it has passed its elastic limit.
Shape memory alloys, such as nitinol, are materials that can easily change their shape when exposed to heat or stress. These alloys have the ability to return to their original shape after deformation, making them useful in applications like orthodontic braces and stents.
Elastic Force
No, it chars on heating.
If you stretch a rubber band then release it, it will return to its original shape. That is by definition elastic strain. Anything that returns to its original shape after being affected by force underwent elastic strain. If it is permanently deformed (ie you bent a paperclip out of place and it wont return to its original shape) then it passes the elastic strain region and suffered plastic strain.
Yes, in the sense that you can dry a wool garment in a shape that you desire. With wear, a simple shake or tug on a garment may return it to its original shape.