Answer:
Volcano (volcanic arc), island (Island arc), trench and subduction zone
Explanation:
When two tectonic plates of different densities shares a convergent type of plate boundary, then the denser plate sinks below the lighter plate. Due to this, it forms a subduction zone above which there lies a trench. The subducting plate melts at larger depth, which allows the magma to rise up towards the surface in the over-riding plate. It results in the formation of volcanoes, islands, volcanic and island arcs. It also generates deep-focus earthquakes.
