candlewood vs ocotillo

candlewood

noun
  • Pterocelastrus tricuspidatus, a medium-sized evergreen tree indigenous to South Africa. 

  • Dacryodes excelsa, a tree native to Puerto Rico. 

ocotillo

noun
  • Any of various succulent plants, not closely related to the cactus, in genus Fouquieria, especially Fouquieria splendens, living in Central America or the southwest United States. 

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