Differentiate frontend and backend languages and their relation too

Answer 1

In web development front-end languages, like JavaScript, are interpreted by the browser and contain stuff like interactive elements, video games etc. The server just gives the browser the JS code, nothing more.

Back-end languages, like PHP, run on the server and contain the internal logic of the site. It's recursive acronym "PHP: Hypertext Preprocessor" is pretty self explanatory (if you know what hypertext and preprocessors are). The browsers never gets to see the php code.

Answer 2

web designers take care of front end where as backend programming is done by web programmers