lieutenant junior grade vs representative

lieutenant junior grade

noun
  • A commissioned officer in the United States Coast Guard, Public Health Service, or National Atmospheric and Oceanic Administration whose rank is above an ensign and below a lieutenant. 

  • A commissioned officer of the United States Navy whose rank is above an ensign's and below a lieutenant, or a corresponding rank in other navies. 

representative

noun
  • Specifically, a member of the United States House of Representatives. 

  • Someone who represents others as a member of a legislative or governing body. 

  • One who speaks for or acts on behalf of another in a particular (especially official) capacity. 

  • An heir. 

  • A member of a particular class. 

  • Something representing or standing for another; a symbol, an embodiment. 

  • A substitute or analogue. 

  • A company agent who visits potential purchasers; a salesman. 

  • Something (especially a living organism) regarded as typical of its class; a type. 

adj
  • Representing, showing a likeness. 

  • Typical; having the same properties or interest as a larger group. 

How often have the words lieutenant junior grade and representative occurred in a corpus of books? (source: Google Ngram Viewer )