hiaqua vs mozzarella

hiaqua

noun
  • Beads or shells, especially as placed on strings and valued as ornaments or a sort of currency. 

mozzarella

noun
  • Money. 

  • Soft Italian cheese made from cow's or buffalo's milk and commonly used as a pizza topping and in salads etc. 

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