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Subduction :

This occurs when an oceanic crust sinks below either an oceanic or a continental plate along a convergent margin (destructive plate margin).

Convergent plate boundary:

Also known as a destructive plate boundary (because of subduction), is an actively deforming region where two (or more) tectonic plates or fragments of lithosphere move toward one another and collide. As a result of pressure, friction, and plate material melting in the mantle, earthquakes and volcanoes are common near convergent boundaries.

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