Objects vs sprites

In this world there are many objects, like cars, trains and kebabs.
All of these object look a certain way (a property) and do certain things (have attributes)
​A car is an object
​A real car can have the property of being red in colour and an attribute might be that the car can move forwards
A digital car (in a game) can also have the property of being red in colour and an attribute might be that the car can move forwards

Object vs Sprites

An object can exist as pure code (like the ghost above with no sheet). You couldn't see ghost until he put a sheet on. In this case, the sheet is the object's sprite. The sprite is white, but a programmer might change it to blue or red.
Objects have code, sprites do not.
Objects are coded to do things, a sprite is just a picture (or a series of pictures like the car above).
A programmer code objects, a graphic artist draws sprites. The programmer then assigns the sprite to the object.