copperhead vs sorrel

copperhead

noun
  • Someone with ginger hair. 

  • Coelognathus radiatus (syn. Elaphe radiata), the copperhead rat snake, a non-venomous colubrid species found in southern Asia. 

  • Agkistrodon contortrix, a venomous pit viper species found in parts of North America. 

  • Deinagkistrodon acutus, the Chinese copperhead, a venomous pit viper species found in Southeast Asia 

  • Austrelaps spp. (Australian copperheads), a genus of venomous elapids found in southern Australia and Tasmania. 

sorrel

noun
  • A brown colour, with a tint of red. 

  • Rumex acetosa (common sorrel, garden sorrel), sometimes used as a salad vegetable. 

  • The roselle, Hibiscus sabdariffa. 

  • Members of genus Oxalis or family Oxalidaceae, woodsorrels. 

  • A drink, consumed especially in the Caribbean around Christmas, made from the flowers of Hibiscus sabdariffa: hibiscus tea. 

adj
  • Of a brown colour, with a tint of red. (especially: a sorrel horse) 

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