charity vs pourboire

charity

noun
  • The goods or money given to those in need. 

  • Benevolence to others less fortunate than ourselves; the providing of goods or money to those in need. 

  • An organization, the objective of which is to carry out a charitable purpose. 

  • In general, an attitude of kindness and understanding towards others, now especially suggesting generosity. 

pourboire

noun
  • A bribe. 

  • A tip (extra money given to e.g. a waiter in appreciation of service), especially in French contexts. 

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