mnemonic vs representation

mnemonic

noun
  • Something (especially a series of ideas, letters, words, etc.) used to help in remembering a thing; a memory aid. 

  • The human-readable, textual form of an assembly language instruction, not including operands. 

adj
  • Of or relating to memory. 

  • Especially of a series of ideas, letters, words, etc.: intended to help in remembering. 

  • Of or relating to mnemonics (“the study of techniques for remembering anything more easily”). 

representation

noun
  • A figure, image or idea that substitutes reality. 

  • The act of representing. 

  • An object that describes an abstract group in terms of linear transformations of vector spaces; (more formally) a homomorphism from a group on a vector space to the general linear group (group of all bijective linear transformations) on the space. 

  • A statement; a presentation of opinion or position, or an utterance made to influence the opinions or actions of others 

  • The lawyers and staff who argue on behalf of another in court. 

  • That which represents something else. 

  • The ability to elect a representative to speak on one's behalf in government; the role of this representative in government. 

  • A theatrical performance. 

  • An act of representing, i.e. presenting again. 

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