diminutive vs undergrown

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 

undergrown

adj
  • insufficiently grown; not having grown to a normal or suitable size. 

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