What is the difference btwn vulcanicity and volcanicity?

Vulcanicity is the process through which solid, liquid or gaseous materials are forced into the crust or on the surface of the earth while volcanicity is the process through which igneous materials reach the earth's surface.

Explanation:

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Answer mauritania is in the northwestern part of african, meaning its in the western hemisphere, and how do i know/ the map showed me so; ///: )