offal vs valuables

offal

noun
  • That which is thrown away as worthless or unfit for use; refuse; rubbish. 

  • A dead body; carrion. 

  • The internal organs of an animal, used as food. 

  • A by-product of the grain milling process, which may include bran, husks, etc. 

valuables

noun
  • valuable items collectively. 

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