jelly coconut vs marmalade

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) 

marmalade

noun
  • A kind of jam made with citrus fruit, distinguished by being made slightly bitter by the addition of the peel and by partial caramelisation during manufacture. Most commonly made with Seville oranges, and usually qualified by the name of the fruit when made with other types of fruit. 

verb
  • To spread marmalade on. 

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