ineffectual vs leading

ineffectual

adj
  • Unable or insufficient to produce effect. 

  • Worthless; ineffective. 

  • Weak, indecisive; lacking forcefulness. 

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 ineffectual and leading occurred in a corpus of books? (source: Google Ngram Viewer )