The entrance and exit animations cause an object to enter or exit the slide with a(n) effect.

selected

Explanation:

The Entrance and Exit animations cause an object to enter or exit the slide with a selected effect. In the Microsoft Office Suite PowerPoint application there are a variety of different Entrance or Exit animations for the presentation slides. Some of which include Fade in-out, Paper Shredding in-out, Fall in-out, Pop in-out, Slide in-out, etc. Any of which can be selected and will be applied to the specific slide.

the difference is right there dont you see it

the omega button is one of them.