eastern red cedar vs red cedar

eastern red cedar

noun
  • A species of juniper, Juniperus virginiana, of eastern North America. 

red cedar

noun
  • A juniper native to North America and highly prized for its fragrant wood, Juniperus virginiana. 

  • An evergreen tree of the mahogany family with reddish wood, found in Australia, Toona australis. 

  • Trichilia hirta 

  • The wood of any of these trees. 

  • The arbor vitae, found in North America, Thuja plicata. 

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