broad vs cast iron

broad

adj
  • Free; unrestrained; unconfined. 

  • General rather than specific. 

  • Extended, in the sense of diffused; open; clear; full. 

  • Comprehensive; liberal; enlarged. 

  • Having a large measure of any thing or quality; unlimited; unrestrained. 

  • Unsubtle; obvious. 

  • Plain; evident. 

  • Strongly regional. 

  • Wide in extent or scope. 

  • Velarized, i.e. not palatalized. 

noun
  • A British gold coin worth 20 shillings, issued by the Commonwealth of England in 1656. 

  • A shallow lake, one of a number of bodies of water in eastern Norfolk and Suffolk. 

  • A lathe tool for turning down the insides and bottoms of cylinders. 

  • A kind of floodlight. 

cast iron

adj
  • Durable; tough; resilient. 

  • Inflexible or without exception. 

  • Made of cast iron. 

noun
  • A hard and brittle, but strong, alloy of iron, carbon, and silicon, formed by casting in a mould. 

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