How are canyons and mountains different?

Mountains rise up out of the earth like giant hills, and canyons are like large holes in the earth, so on either side of a canyon you could say there are mountains. If you were to google The Grand Canyon it would help you determine what a canyon is. So basically they are 2 opposites; a mountain rises out of the ground and a canyon is an incredibly large "hole" in the ground. I hope this has helped you!