chowchow vs piccalilli

chowchow

noun
  • An American relish, containing pickled green tomatoes, cabbage, and often other vegetables. 

  • A Chinese preserve. 

adj
  • Consisting of several kinds mingled together; mixed. 

piccalilli

noun
  • A pickle, typically on a base of chopped green (unripe) tomatoes, but sometimes finely-chopped gherkins, and possibly including other vegetables. 

  • A yellow pickle relish made from cauliflower, vegetable marrow, and other vegetables, pickled with vinegar, salt, sugar, and spiced with mustard, turmeric, and other spices. 

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