Prairie and Sward

Prairie noun - A broad area of level or rolling treeless country.

Sward and prairie are semantically related In some cases you can use "Sward" instead a noun "Prairie".

Sward noun - Surface layer of ground containing a mat of grass and grass roots.

Prairie and sward are semantically related in meadow topic. Sometimes you can use "Prairie" instead a noun "Sward", if it concerns topics such as clod.