Question

differentiate between slide transition and rehearse timing​

Answer 1

Answer:

When you want to record a running time for each slide, use the Rehearse Timings feature. This enables you to run through your presentation in Slide Show view and record the time each slide takes. Then, use the timings to run the show automatically, either to help you rehearse, or for a self-running show.

A slide transition is how one slide is removed from the screen and the next slide is displayed during a presentation. ... The transitions tab contains the Transitions to This Slide group. From this group choose a special effect to be applied during the transition between the previous slide to the next slide.

Answer 2

Rehearse Timing

You can rehearse your presentation to make sure that it fits within a certain time frame. While you rehearse, use the Rehearse Timings feature to record the time that you need to present each slide, and then use the recorded times to advance the slides automatically when you give your presentation to your actual audience.

Whereas,
Slide Transitions

Slide transitions are the animation-like effects that occur when you move from one slide to the next during a presentation. You can control the speed, add sound, and customize the properties of transition effects.