examples - work, email phone, personal email. Each had a button on the home screen but must have touch screen on something an all were delete of screen.
There is no "trash" like there is on Windows. All the items that were removed are available either from the app drawer (long-press the item when you find it and drag it to the spot you want it) or as a "widget" (find those by long-pressing on a blank space on the home screen and selecting widgets).