posada vs roadhouse

posada

noun
  • An inn in Spanish-speaking regions. 

  • A traditional Mexican Christmas procession. 

roadhouse

noun
  • An inn or similar establishment situated beside a road beyond the jurisdiction of a town or city. 

  • A receiving house. 

  • A truck stop located in a remote area, with basic accommodation facilities. 

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