Should you use different CMS on the same hosting?

In order to give an answer, first, will we analyze what is a CMS?

CMS is a content management system created from a variety of scripts. It was created to facilitate the administration of the site. Since it has a graphical interface, a person doesn't need the skills of website layout, or knowledge of the programming language.

One of the most popular and simple CMS is WordPress and Joomla.

The main question: Should I use different CMS on the same hosting?

 It's not recommended to host different CMS on the  one hosting. Because they will not work (depends on the CMS that you put), or they will work, but not correct. The reason for this may be different versions of PHP modules, because different versions of these modules are required for different CMS. Therefore, there will be a conflict between them.