skate

An ice skate is a steel blade, which are worn on the feet to travel across ice.

A roller skate has wheels, which are worn on the feet, to travel across smooth surfaces.

A skate board is a small piece of wood with wheels on the bottom.

A skate is a type of ray with a flat body.

To skate is to travel using roller skates, ice skates, or a skate board.

Example: I loved to ice skate during the winter.