Match the items on the right to the items on the left.

Alloys	??? metals mixed together to form a new metal alloys return to their original shape after being deformed pushing together alloy between nickel and titanium shape is changed.
Deformed	??? metals mixed together to form a new metal alloys return to their original shape after being deformed pushing together alloy between nickel and titanium shape is changed.
Nitinol	??? metals mixed together to form a new metal alloys return to their original shape after being deformed pushing together alloy between nickel and titanium shape is changed.
Shape memory	??? metals mixed together to form a new metal alloys return to their original shape after being deformed pushing together alloy between nickel and titanium shape is changed.
Compression	??? metals mixed together to form a new metal alloys return to their original shape after being deformed pushing together alloy between nickel and titanium shape is changed.