dumbbell vs hatstand

dumbbell

noun
  • A weight training implement consisting of a short bar with weight counterpoised on each end. 

  • A stupid person. 

hatstand

noun
  • A device used to store hats upon, consisting of a vertical pole with a sturdy base to prevent toppling, and an array of pegs to hold the hats. 

adj
  • Crazy, insane. 

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