Jack-in-the-pulpit vs cobra lily

Jack-in-the-pulpit

noun
  • Any plant in the genus Arisaema. 

  • Cat's cradle. 

  • A woodland plant of northern Europe, Arum maculatum. 

  • A plant in the northeastern North America, Arisaema triphyllum. 

cobra lily

noun
  • Any plant in the genus Arisaema spread in eastern Asia, eastern Africa and eastern North America 

  • The plant Chasmanthe aethiopica. 

  • A carnivorous plant native to northern California and southern Oregon, Darlingtonia californica 

How often have the words Jack-in-the-pulpit and cobra lily occurred in a corpus of books? (source: Google Ngram Viewer )