The three plate boundaries
Convergent boundary is an effectively deforming region where two or more tectonic plates or fragments of the lithosphere move toward one another and collide. Examples are the Andes mountains, the Marianas trench, and the Aleutians islands.
Divergent boundary is a linear that exists between two tectonic plates that are moving away from each other. Examples are the great Rift Valley in Africa and the mid- Atlantic ridge in the Atlantic Ocean.
A boundary where two plates slide past each other. Examples are the San Andreas fault and the Alpine fault.