What is the difference between Mesopotamia and Egypt?

Mesopotamia is a name for the area of the Tigris–Euphrates river system, in modern days roughly corresponding to most of Iraq plus Kuwait, the eastern parts of Syria, and regions along the Turkish-Syrian and Iran–Iraq borders.
Egypt, is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia by a land bridge formed by the Sinai Peninsula. Egypt is a Mediterranean country bordered by the Gaza Strip and Israel to the northeast, the Gulf of Aqaba to the east, the Red Sea to the east and south, Sudan to the south, and Libya to the west. Across the Gulf of Aqaba lies Jordan, and across from the Sinai Peninsula lies Saudi Arabia, although Jordan and Saudi Arabia do not share a land border with Egypt. It is the world's only contiguous Afrasian nation.