Terra means Earth, Ciera means a female given name of modern American usage, variant of Ciara or Sierra In Spanish, tierra means earth/land and sierra means mountains, so tierra sierra would be mountainous land.
The Limba are the indigenous people of Sierra Leone. They are tribal and speak a language that is unrelated to other tribal groups in the area. There are approximately 150 rural chiefdoms in Sierra Leone.
The Sierra Nevada snowy mountain rangeis a mountain range in the U.S. states of California and Nevada, between the California Central Valley and the Basin and Range Province. Sierra Nevada means snowy hill. The Nevada state has some land of the Sierra Nevada mountain.