indicative vs ineffectual

indicative

adj
  • of, or relating to the indicative mood 

  • serving as a sign, indication or suggestion of something 

noun
  • The indicative mood. 

  • A term in the indicative mood. 

ineffectual

adj
  • Weak, indecisive; lacking forcefulness. 

  • Unable or insufficient to produce effect. 

  • Worthless; ineffective. 

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