common alder vs inkberry

common alder

noun
  • A tree native to much of Europe and neighboring Africa and Asia (Alnus glutinosa). 

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) 

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