ace in the hole vs stash

ace in the hole

noun
  • Synonym of ace up one's sleeve 

stash

noun
  • mustache 

  • 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. 

  • A collection, sometimes hidden; a reserve. 

verb
  • To hide or store away for later use. 

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