French kiss vs smackeroo

French kiss

noun
  • The act or an instance of kissing that involves the use of one's tongue. 

  • The act or an instance of touching cheeks together in turn as a greeting. 

  • The act or an instance of kissing another person's cheeks in turn as a greeting. 

verb
  • To give a French kiss, in its various senses. 

smackeroo

noun
  • Synonym of kiss. 

  • Synonym of dollar. 

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