the Emperor and the Shogun

What was the difference between the Emperor and the Shogun?

The Emperor has been only a symbol of Japan in most of Japanese history. Whereas, the Shogun was the title granted by the Emperor to a military leader. The Shogun was allowed to govern all the other local lords. However his power was actually the highest authority of bakufu military government from the Kamakura period to the end of the Edo period.