The word "velds" is a plural noun used to refer to the open grassy plains of South Africa. There are several synonyms that can be used in place of the word "velds". These include savannah, prairie, steppe, and grassland. The savannah is a vast area of grassland with scattered trees and is mostly found in Africa. The prairie is a large plain covered with grass and has few trees. The steppe is a dry grassland found in temperate regions. Finally, the grassland is a large area covered with grass, and it is home to various wildlife species. These synonyms can be used interchangeably with the word "velds", depending on the context of use.