A tile is pretty much how a graphic is "broken up", and stored in a game...think of it like an actual tile in a house. One of them might not look like much (or even weird), but when you piece many of them together, you form an image.
A sprite is a full character, enemy, or other animated/static object. Sprites store each frame of their animations (if they have any) as a separate image.
A sprite is a full character, enemy, or other animated/static object. Sprites store each frame of their animations (if they have any) as a separate image.