spiceberry vs twinberry

spiceberry

noun
  • Its fruit, a glossy, bright red drupe. 

  • A compact flowering plant, Ardisia crenata, native to East Asia. 

twinberry

noun
  • Its fruit, a bitter edible black berry containing several small seeds. 

  • A North American species of honeysuckle, Lonicera involucrata. 

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