jello vs jelly coconut

jello

noun
  • A dessert made by boiling flavoured gelatin in water 

jelly coconut

noun
  • A coconut with soft or gelatinous meat inside as well as the meat itself (which is of regular quality if the coconut is immature) 

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