stash vs stealthiness

stash

noun
  • A collection, sometimes hidden; a reserve. 

  • Clothing or other items branded with a particular university club or society's logo. 

  • A place where drugs are stored. 

  • A collection of yarn or other materials not yet allocated to any particular craft project. 

  • mustache 

verb
  • To hide or store away for later use. 

stealthiness

noun
  • The property of being stealthy. 

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