In Google Analytics: App + Web, you collect events. One event differs from another event by the name it uses. An event with the name page_view is different from, say, an event with the name file_download.
This is all run-of-the-mill stuff. You know this.
However, the fundamental change that App + Web introduces, when compared to Universal Analytics, is how event parameters are collected and processed.
This gets more complicated than it should be.
