directive vs keyword

directive

noun
  • A construct in source code that indicates how it should be processed but is not necessarily part of the program to be run. 

  • An instruction or guideline that indicates how to perform an action or reach a goal. 

  • A form of legislative act addressed to the member states. The directive binds the member state to reach certain objectives in their national legislation. 

  • The directive case. 

  • An authoritative decision from an official body, which may or may not have binding force. 

adj
  • That which directs; serving to direct, indicate, or guide. 

  • Relating to the directive case. 

keyword

noun
  • Any word used as the key to a code. 

  • A reserved word used to identify a specific command, function, etc. 

  • Any important word in a text or document, which may be linked to other words or other information, or at least merely listed in the metadata for searches to find. 

  • Any word that occurs in a text more often than normal. 

  • Any word used in a reference work to link to other words or other information. 

verb
  • To tag with keywords, as for example to facilitate searching. 

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