tenderness vs tickling

tenderness

noun
  • pain or discomfort when an affected area is touched 

  • a tendency to express warm, compassionate feelings 

  • concern for the feelings or welfare of others 

tickling

noun
  • A sensation that tickles. 

  • The act by which someone is tickled. 

adj
  • That tickles 

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