black alder vs pokeweed

black alder

noun
  • American winterberry, Ilex verticillata. 

  • Wood or other product of the tree. 

  • A tree (Alnus glutinosa), of many practical uses, growing in moist conditions in Europe. 

pokeweed

noun
  • A poisonous North American plant, Phytolacca americana, with reddish stems, broad leaves, clusters of white flowers, and dark purple berries. 

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