inn vs posada

inn

noun
  • A tavern. 

  • One of the colleges (societies or buildings) in London, for students of the law barristers. 

  • Any establishment where travellers can procure lodging, food, and drink. 

posada

noun
  • An inn in Spanish-speaking regions. 

  • A traditional Mexican Christmas procession. 

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