Brief: the CMS core includes several components such as, e-center, default layout, membership groups, and general settings.
How to know the core: in order to figure out the CMS core, you need to uninstall all modules and plugins, so that only the core is shown.
The most important core components: they are considered as significant CMS features as they involve e-center, usergroup manager that allows the admin to manage the members’ permissions, languages and other various ones that make it easier to manage the website.
Core Components:
1-E-Center
2-Contact forms
3-Usergroup manager
4-User’s manager
5-Styles and layout
6-languages
7-Actions log
8-Scheduled tasks
9-Repair/Optimize Tables
10-Settings