jimsonweed vs thorn apple

jimsonweed

noun
  • A poisonous plant of the Datura stramonium species, part of the nightshade (Solanaceae) family. A hallucinogen occasionally ingested by those looking for a cheap high. 

  • Any poisonous plant of the genus Datura. 

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 jimsonweed and thorn apple occurred in a corpus of books? (source: Google Ngram Viewer )