malpitte vs thorn apple

malpitte

noun
  • A weed in the nightshade family (Datura stramonium), which can be used as a hallucinogenic drug. 

thorn apple

noun
  • Jimsonweed (Datura stramonium), an annual plant having white flowers and prickly capsules. 

  • Datura spp., especially 

  • Crataegus spp. 

  • Solanum incanum, native to Africa and Asia 

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