The effect of words appearing to fly in and out or dissolve in a presentation is typically caused by the addition of text animations. Text animations allow you to control how text appears on the slide, including the entrance, emphasis, and exit effects.
Slide transitions, on the other hand, affect how one slide changes to another rather than how individual elements on a slide show or disappear. Action buttons are interactive elements that link to different slides or actions, and clip art is simply graphical elements added to enhance the presentation visually.