cardinal vs leading

cardinal

adj
  • Of or relating to the cardinal directions (north, south, east and west). 

  • Having a bright red color (from the color of a Catholic cardinal's cassock). 

  • Describing a "natural" number used to indicate quantity (e.g., zero, one, two, three), as opposed to an ordinal number indicating relative position. 

  • Of fundamental importance; crucial, pivotal. 

noun
  • One of the officials appointed by the pope in the Roman Catholic Church, ranking only below the pope and the patriarchs, constituting the special college which elects the pope. (See Wikipedia article on Catholic cardinals.) 

  • Any of various related passerine birds of the family Cardinalidae (See Wikipedia article on cardinals) and other similar birds that were once considered to be related. 

  • A deep red color, somewhat less vivid than scarlet, the traditional colour of a Catholic cardinal's cassock. (same as cardinal red) 

  • A woman's short cloak with a hood, originally made of scarlet cloth. 

  • Any of a genus of songbirds of the finch family, Cardinalis. 

leading

adj
  • Providing guidance or direction. 

  • Occurring in advance; preceding. 

  • Ranking first. 

noun
  • Vertical space added between lines; line spacing. 

  • An act by which one is led or guided. 

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