ferrous vs stout

ferrous

adj
  • Of or containing iron. 

  • Of compounds of iron in which it has a valence or oxidation number of 2. 

stout

adj
  • Obstinate. 

  • Firm; resolute; dauntless. 

  • Materially strong, enduring. 

  • Large; bulky. 

verb
  • To persist, endure. 

noun
  • Gadfly. 

  • Gnat. 

  • A large clothing size. 

  • A dark and strong malt brew made with toasted grain. 

  • An obese person. 

  • Firefly or miller (moth). 

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