cypress vs stone pine

cypress

noun
  • An evergreen coniferous tree with flattened shoots bearing small scale-like leaves, whose dark foliage is sometimes associated with mourning, in family Cupressaceae, especially the genera Cupressus and Chamaecyparis. 

stone pine

noun
  • A species of pine native of southern Europe, Pinus pinea. 

  • Swiss stone pine (Pinus cembra) 

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