Front-end is also referred to as the “client-side” and whereas the backend is the “server-side” of the application. The essentials of backend web development include programming languages such as Java, Ruby, Python, PHP, .Net, etc. The most essential frontend languages are HTML, CSS, and JavaScript.
You can enroll this Full stack developer course by Intellipaat if you want to learn both frontend and backend development.
You can watch this video for more information: