Electrolytic cell and electrolysis

•  Electrolysis: It is the process in which electrical energy is used to drive a non-spontaneous chemical reaction.
•   An electrolytic cell is an apparatus for carrying out electrolysis.
•   Processes in an electrolytic cell are the reverse of those in a galvanic cell.

Electrolysis process is used in  Manufacture of Cl₂ and NaOH, Electro-refining and Electroplating, Electrolysis of water