mnemonic vs routine

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”). 

routine

noun
  • A set of instructions designed to perform a specific task; a subroutine. 

  • A course of action to be followed regularly; a standard procedure. 

  • A set piece of an entertainer's act. 

  • A set of normal procedures, often performed mechanically. 

adj
  • Ordinary with nothing to distinguish it from all the others. 

  • According to established procedure. 

  • Regular; habitual. 

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