diddy vs diminutive

diddy

adj
  • very small, tiny 

noun
  • A woman's breast. 

  • A fool, a tit. 

  • A gypsy. 

diminutive

adj
  • Very small. 

  • Of or pertaining to, or creating a word form expressing smallness, youth, unimportance, or endearment. 

noun
  • A word form expressing smallness, youth, unimportance, or endearment. For example, doggie from dog, Sophie for Sophia, darling from dear 

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