diminutive vs short form

diminutive

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

adj
  • Very small. 

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

short form

noun
  • A word with the same meaning as another formed by removing one or more of the syllables of the longer word, and considered a word in its own right rather than an abbreviation. 

  • Particularly in Slavic languages, a shortened form of the adjective, used predicatively. 

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