bivvy vs hut

bivvy

noun
  • A small tent or shelter. 

verb
  • To erect, or to stay in, such a tent or shelter. 

hut

noun
  • A small, simple one-storey dwelling or shelter, often with just one room, and generally built of readily available local materials. 

  • A small wooden shed. 

intj
  • Called by the quarterback to prepare the team for a play. 

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