moor vs plateau

moor

noun
  • A game preserve consisting of moorland. 

  • An extensive waste covered with patches of heath, and having a poor, light soil, but sometimes marshy, and abounding in peat; a heath 

verb
  • To fix or secure (e.g. a vessel) in a particular place by casting anchor, or by fastening with ropes, cables or chains or the like. 

  • To secure or fix firmly. 

  • To cast anchor or become fastened. 

plateau

noun
  • A largely level expanse of land at a high elevation; tableland. 

  • A comparatively stable level after a period of increase. 

  • A notable level of attainment or achievement. 

verb
  • (of a varying quantity) To reach a stable level after a period of increase; to level off. 

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