diminutive vs hypocoristic

diminutive

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

  • Very small. 

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

hypocoristic

adj
  • Relating to a nickname, usually indicating intimacy with the person. 

  • Relating to baby talk. 

noun
  • A nickname, especially one indicating intimacy and formed through a shortening of the original name. 

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