Why I'm doing this?
I often see that people use AngularJS and Angular names interchangeably. It's an obvious mistake for someone familiar with the front-end programming.
Angular is an open-source TypeScript-based framework created by Google from scratch. It's been totally rewritten and not compatible with AngularJS. The latest stable version of the framework is 4.4.4. They started from version 2 to avoid even more confusion.
I feel I have made the world better. Go now and correct everyone (it's such fun)!