Convergent volcanism and divergent volcanism are two types of volcanism that occur in different tectonic settings.
Convergent volcanism occurs at the boundary between two tectonic plates where one plate is being subducted under the other. The subducting plate is forced down into the mantle, where it begins to melt and rise up through the overlying plate. This melting and rising of magma creates volcanoes on the surface of the overlying plate. Convergent volcanism is also known as subduction zone volcanism.
Divergent volcanism occurs at the boundary between two tectonic plates where the plates are moving apart. This creates a gap or rift in the Earth's crust, through which magma from the mantle can rise up and create volcanoes. Divergent volcanism is also known as rift zone volcanism.
Overall, the main difference between convergent and divergent volcanism is the type of tectonic setting in which they occur. Convergent volcanism occurs at the boundary between two plates where one is being subducted, while divergent volcanism occurs at the boundary between two plates where the plates are moving apart.