knee-high to a grasshopper vs tiny

knee-high to a grasshopper

adj

  • short; especially relating to when the subject was a small child 

tiny

adj

  • Very small. 

noun

  • A small child; an infant. 

  • Anything very small. 

How often have the words knee-high to a grasshopper and tiny occurred in a corpus of books? (source: Google Ngram Viewer )