gratuity vs handout

gratuity

noun
  • An additional payment given freely as thanks for service. 

handout

noun
  • A gift to the poor or needy. 

  • A gift, something obtained without effort. 

  • A worksheet, leaflet, or pamphlet that is given out (usually by hand) for a certain use. 

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