hat vs headpiece

hat

noun
  • A covering for the head, often in the approximate form of a cone, dome or cylinder closed at its top end, and sometimes having a brim and other decoration. 

  • A hat switch. 

  • A particular role or capacity that a person might fill. 

  • The lottery or draw itself. 

  • Any receptacle from which numbers/names are pulled out in a lottery. 

  • User rights on a website, such as the right to edit pages others cannot. 

  • The háček symbol. 

  • The caret symbol ^. 

verb
  • To place a hat on. 

  • To appoint as cardinal. 

  • To shop for hats. 

headpiece

noun
  • Something covering the head. 

  • A headstall. 

  • A decorative page heading used at the start of volumes or chapters. 

  • A headset. 

  • The top piece or part of various things. 

  • Protecting cover for the head; a helmet. 

  • The head; the brain. 

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