et cetera vs whatnot

et cetera

noun
  • Something in addition, which can easily be understood. 

phrase
  • The full form of etc.: and so forth, and the rest. 

whatnot

noun
  • Other related objects or ideas. 

  • A freestanding set of shelves on which ornaments are displayed; an etagere. 

  • A small unspecified object; bric-a-brac (in plural) 

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