Hey! AngularJS is the older version of Angular, so versions 1.x, and those are covered in Shaping Up and Staying Sharp.
Accelerating is Angular, also known as Angular 2.x and greater; the course uses a 2.x version.
There is a lot of code already in AngularJS out there, which is why you'd want to take it. Do note I find both frameworks quite a bit different: knowing AngularJS (i.e., versions 1.x), to me, didn't help much with understanding Angular (i.e., versions 2.x and later)