inkberry vs pokeroot

inkberry

noun
  • Any plant of the genus Phytolacca, especially Phytolacca americana, the pokeweed. 

  • Ilex verticillata, American winterberry 

  • Scaevola plumieri, a fan flower 

  • Ilex glabra (winterberry, gallberry) 

pokeroot

noun
  • Synonym of pokeweed 

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