nugget vs seed pit

nugget

noun
  • A bud from the Cannabis sativa plant, especially one that is potent. 

  • A tidbit of something valuable. 

  • A small piece of tasty food, a tidbit. 

  • A type of boot polish. 

  • A chicken nugget. 

  • An inexperienced, newly trained fighter pilot. 

  • A small, compact chunk or clump. 

  • A partial description gleaned from data mining. 

  • A person with no arms or legs; a basket case. 

seed pit

noun
  • A single seed in the center of a cherry, peach, plum, olive, avocado or other fruit. 

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