chalybeate vs steam iron

chalybeate

noun
  • A mineral water containing iron, a voguish general remedy during the 17th-19th century. 

adj
  • Containing dissolved salts of iron. 

  • Tasting of iron, said of mineral water. 

steam iron

noun
  • A smoothing iron that includes a system for spraying steam onto the item being ironed. 

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