bald cypress vs cypress

bald cypress

noun
  • Taxodium distichum, deciduous conifer trees native to often-flooded areas of the southeastern and south central parts of the United States. 

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. 

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