General terms:
* Tropical grassland: This is a widely used term that emphasizes the climate and vegetation type.
* Grassland: This is a more general term that can also refer to other types of grasslands.
* Prairie: This term is specifically used for savannas in North America.
* Steppe: This term is used for savannas in Eurasia.
* Velds: This term is used for savannas in South Africa.
* Campos: This term is used for savannas in South America.
Specific terms:
* Miombo woodland: This term refers to savannas dominated by miombo trees, found in central and southern Africa.
* Acacia savanna: This term refers to savannas dominated by acacia trees, found in Africa and Australia.
* Thornbush savanna: This term refers to savannas dominated by thorny trees and shrubs, found in Africa and Australia.
The best term to use depends on the context and the specific characteristics of the savanna you are referring to.