savanna (n.)
- basin
- bottomland
- campo
- champaign
- delta
- desert
- down
- downs
- fell
- flat
- flats
- grass
- grassland
- grazing
- heath
- lea
- level
- llano
- lowland
- lowlands
- mare
- mead
- meadow
- mesa
- moor
- moorland
- pampas
- park
- pasturage
- pasture
- peneplain
- plain
- plains
- plateau
- prairie
- range
- steppe
- swale
- table
- tableland
- tundra
- upland
- vega
- veld
- weald
- wold