black alder winterberry vs yellow nightshade

black alder winterberry

noun
  • A deciduous holly shrub, Ilex verticillata, native to eastern North America, growing best in moist circumstances. 

yellow nightshade

noun
  • Physalis crassifolia 

  • Solanum villosum 

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