grazing vs shieling

grazing

noun
  • The action of animals eating, mainly of grass in a field or on other grassland. 

  • Grazeland. 

shieling

noun
  • An area of summer pasture used for cattle, sheep etc. 

  • A shepherd's hut or shack. 

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