ling vs monkfish

ling

noun
  • Any of various marine food fish, of the genus Molva, resembling the cod. 

  • Common heather (Calluna vulgaris) 

  • Any of various varieties of heather or broom. 

  • A common ling (Molva molva). 

monkfish

noun
  • Any large bottom-dwelling anglerfish of the genus Lophius, such as Lophius piscatorius, of the Atlantic, having a large head and mouth. 

  • Angel sharks of the genus Squatina. 

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