Here's a breakdown:
* Mesa: A mesa is a flat-topped, elevated area of land with steep sides. The word "mesa" comes from the Spanish word for "table." Mesas are often formed by erosion, where softer layers of rock are eroded away, leaving behind a harder, more resistant layer that forms the flat top.
* Butte: Similar to a mesa, but smaller and with a more pointed top.
Let me know if you have any other questions!