Using WordPress you can create
any app developing your own plugins
Blogs were the 1st use of WordPress, before to became a CMS
Magazines / News sites
e-shops with the FREE WooCommerce plugin or other Paid
social communities, by using the Free BuddyPress plugin (or another Paid) and a Pro Theme
Learning Management Systems (LMS or Online Schools)
apps that are needed booking (like Dentist Office)
Bridge with WordPress at the front and Moodle LMS at back
Sites for Marketing promotions
Authors and Writers Sites
Real Estate Sites
Doctors, Lawyers, and more sites
Sites like Amazon, Quora, e.t.c.
Job sites
and many more
