Indian almond vs umbrella tree

Indian almond

noun
  • A tropical tree grown for its edible fruit, almondlike nuts, and as an ornamental shade tree, Terminalia catappa. 

umbrella tree

noun
  • Terminalia catappa, the Indian almond. 

  • Magnolia tripetala, the umbrella magnolia. 

  • Musanga cecropioides, the African corkwood. 

  • Vachellia tortilis, the umbrella thorn. 

  • Polyscias murrayi, an Australian rainforest tree. 

  • Schefflera actinophylla, the octopus tree. 

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