Answer:
Focus and epicenter: Focus is the place within the Earth's crust where an earthquake emanates from. Epicenter on the other hand, is a point on the surface of the earth that is directly above the focus and dissipates the waves to all directions.
Magma and Lava: Magma is molten rock which can be found underground and is an extremely hot liquid which can push through holes and cause a volcanic eruption.
Lava on the other hand, is the molten rock which breaks through the surface of the earth and is the solidified rock that is formed by the cooling of the molten rock.