what is the difference between sahel and sahara
The Sahel (/ səˈhɛl /) is the ecoclimatic and biogeographic zone of transition in Africa between the Sahara to the north and the Sudanian Savanna to the south. Having a semi-arid climate, it stretches across the south-central latitudes of Northern Africa between the Atlantic Ocean and the Red Sea. The name is derived from the Arabic word sāḥil (ساحل, Arabic pronunciation: (ˈsaːħil)) meaning "coast" or "shore" in a figurative sense (in reference to the southern edge of the vast Sahara), while the name Swahili means "coastal (dweller)" in a literal sense.