> Originally, the rewrite of AngularJS was called "Angular 2", but this led to confusion among developers. To clarify, the Team announced that separate terms should be used for each framework with "AngularJS" referring to the 1.X versions and "Angular" without the "JS" referring to versions 2 and up.

-- https://en.wikipedia.org/wiki/Angular_(web_framework)#Naming

Well, nice try I guess. Still, they do say that "Naming things" is one of the two hard problems in computer science.