pasture vs sward

pasture

noun
  • Ground covered with grass or herbage, used or suitable for the grazing of livestock. 

  • Land, specifically, an open field, on which livestock is kept for feeding. 

verb
  • To move animals into a pasture. 

  • To graze. 

  • To feed, especially on growing grass; to supply grass as food for. 

sward

noun
  • An expanse of land covered in grass; a lawn or meadow. 

  • The rind of bacon or pork; also, the outer covering or skin of something. 

  • A homosexual man. 

  • Earth which grass has grown into the upper layer of; greensward, sod, turf; (countable) a portion of such earth. 

verb
  • Of ground, etc.: to be covered with sward; to develop a covering of sward. 

  • To cover (ground, etc.) with sward. 

How often have the words pasture and sward occurred in a corpus of books? (source: Google Ngram Viewer )