Question

difference between sprite and custume in scratch

Answer 1

A backdrop is just the new name of the background. (In 1.4 it was just called background) A costume is another costume for a sprite.
Costumes are the artwork associated with a sprite. Sprites are things that move, so they can have multiple costumes.
Backdrops are the artwork for the stage. The stage doesn't move, but can have multiple backdrops.

Answer 2

Answer:

A Sprite is a graphic element that can be moved , turned , shrunk , grown and etc .

A Costume tab enable us to change the appearance of the sprite while our program is running so that we can give it facial expressions and body movements .