identifier vs representative

identifier

noun
  • One who identifies as a particular type or role; one who says and believes that they are a certain thing. 

  • A formal name used in source code to refer to a variable, function, procedure, package, etc. or in an operating system to refer to a process, user, group, etc. 

  • A primary key. 

  • Someone who identifies; a person who establishes the identity of someone or something. 

  • A guidebook that helps determine the specific class of an object (such as a mushroom, herb, fish, bird, drug, or mineral), or its individual identity (such as that of a star). 

  • Something that identifies or uniquely points to something or someone else. 

  • A code that distinguishes a particular element from all other elements in a document. 

representative

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

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

  • 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. 

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

adj
  • Representing, showing a likeness. 

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

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