shiel vs wickiup

shiel

noun
  • A shepherd's hut or shieling. 

  • A cottage. 

verb
  • To use a place as a shieling. 

wickiup

noun
  • A domed hut, similar to a wigwam, used by some semi-nomadic Native American tribes, particularly in the southwestern and western United States. 

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