diddy vs vest-pocket

diddy

adj
  • very small, tiny 

noun
  • A woman's breast. 

  • A fool, a tit. 

  • A gypsy. 

vest-pocket

adj
  • Smaller than would ordinarily be expected. 

  • Small enough to be carried in a vest pocket or other small container. 

How often have the words diddy and vest-pocket occurred in a corpus of books? (source: Google Ngram Viewer )