Grassy surfaces can be referred to by two different terms: SOD and SWARD. SOD is a term used to describe a grassy surface that has been cut into small pieces and then laid down in order to form a lawn or other grassy area. SWARD, on the other hand, is a term used to describe a grassy surface that has not been cut into pieces, but rather left in its natural state. Both terms are used to refer to grassy surfaces, but they have slightly different meanings.