CMS: A content management system, or CMS, is a computer software system used to enable and organize the joint process of creating and editing text and multimedia documents.
WCMS: stands for Web Content Management System. A WCMS consists of a front end and back end. The front end is the website that the visitors and the logged-on users see. The back end, on the other hand, contains the administration layer of the website for the administrators. Configuration, maintenance, cleaning, the generation of statistics, and new content creation are all done in back end by authorized people. The back end is at a different URL than the website.