A savanna or savannah is a mixed woodland-grassland ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses. According to Britannica, there exists four savanna forms; savanna woodland where trees and shrubs form a light canopy, tree savanna with scattered trees and shrubs, shrub savanna with distributed shrubs, and grass savanna where trees and shrubs are mostly nonexistent.

sawana उष्णकटिबंधीय घास के मैदानों को कहते हैं। यहां पर्याप्त रूप से छोटे वृक्ष ऐसे लगे होते हैं, कि यह क्षेत्र एकदम एकसार घना हरा भरा रहता है। ये फैले हुए वृक्षो के साथ घास के मैदान है।