cobra lily vs walloper

cobra lily

noun
  • The plant Chasmanthe aethiopica. 

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

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

walloper

noun
  • A cudgel, a shillelagh. 

  • penis; (by extension) an idiot, a stupid person. 

  • One who wallops. 

  • A policeman, a male police officer. 

  • Something big; a whopper. 

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