Convergent Plate Boundary --> <--
An oceanic and a continental plate collide, they form a Convergent Plate Boundary. The denser plate will subduct. A volcanic Mountain such as Mount Rainier in the Cascade Mountains forms a along the edge of the continents. This process can also occur where two oceanic plates collide and the denser plate is subducted
The Convergent Plate Boundary can form Earthquakes and Mountains. It can also stress compression.