Questions on NodeJS application

I have very basic questions on NodeJS apps;

1. When someone says a NodeJS app, does it refer to a pure server-side written NodeJS app ? I mean nowadays, when projects (say Angular, Ember, etc) use Node to install dependencies, can those client-side apps (which run in browser) be also called NodeJS app ? Or are these just NPM using apps ?

2. The unit-testing frameworks like Mocha, Jasmine, etc be used for both the types of apps I described above ? Or is it meant only for server-side NodeJS app ?

via testndtv