almond tree vs elkwood

almond tree

noun

  • The tree that bears the almond, Prunus amygdalus. 

  • The Indian almond, Terminalia catappa. 

elkwood

noun

  • The soft, spongy wood of Magnolia umbrella. 

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