granite vs iron

granite

noun
  • A group of igneous and plutonic rocks composed primarily of feldspar and quartz. Usually contains one or more dark minerals, which may be mica, pyroxene, or amphibole. Granite is quarried for building stone, road gravel, decorative stone, and tombstones. Common colors are gray, white, pink, and yellow-brown. 

  • Toughness; the quality of having a thick skin or being rough. 

iron

noun
  • A meteorite consisting primarily of metallic iron (mixed with a small amount of nickel), as opposed to one composed mainly of stony material. 

  • A common, inexpensive metal, silvery grey when untarnished, that rusts, is attracted by magnets, and is used in making steel. 

  • A golf club used for middle-distance shots. 

  • Any material, not a steel, predominantly made of elemental iron. 

  • A dark shade of the color silver. 

  • A tool or appliance made of metal, which is heated and then used to transfer heat to something else; most often a thick piece of metal fitted with a handle and having a flat, roughly triangular bottom, which is heated and used to press wrinkles from clothing, and now usually containing an electrical heating apparatus. 

  • shackles. 

  • A male homosexual. 

  • A metallic chemical element having atomic number 26 and symbol Fe. 

  • Used as a symbol of great strength or toughness, or to signify a very strong or tough material. 

  • A safety curtain in a theatre. 

  • dumb bombs, those without guidance systems. 

  • Weight used as resistance for the purpose of strength training. 

  • A firearm, either a long gun or a handgun. 

verb
  • To pass an iron over (clothing or some other item made of cloth) in order to remove creases. 

  • To furnish or arm with iron. 

adj
  • Made of the metal iron. 

  • Strong (as of will), inflexible. 

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