hoe nightshade vs pocan

hoe nightshade

noun

  • Solanum physalifolium 

  • Solanum sarrachoides 

pocan

noun

  • The poke, Phytolacca americana (formerly Phytolacca decandra). 

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