pasturage vs ranchland

pasturage

noun
  • A pasture; land that is used for pasture. 

  • The right to graze livestock on a pasture. 

  • The grass or other vegetation eaten by livestock and found in a pasture. 

ranchland

noun
  • Land used for ranching, or raising livestock 

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