They both are made of hardened lava, either created it completely, or was made in layers.the composite volcano was made in alternating layers of hardened lava and cinder layers. But a shield volcano...
It can be. They are formed at hot spots sometimes so they become inactive as the plate moves. The Hawaiian Islands are a good example of Shield volcanoes over a hot spot.
Shield volcanoes are formed by gentle eruptions of basic lava which is runny and flows faster than viscous lava (acid lava). This runny lava flows over a greater area before solidifying, thus...