cypress vs pine tree

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. 

pine tree

noun
  • Any coniferous tree in the genus Pinus 

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