pointless vs unsuccessful

pointless

adj
  • Having no purpose; purposeless; unable to effect an aim. 

  • Without points. 

  • Having no point or sharp tip; terminating squarely or in a rounded end. 

  • Having no prominent or important feature, as of an argument, discourse, etc. 

  • Having no points 

  • Point-free; employing the tacit programming paradigm. 

unsuccessful

adj
  • Failed, not successful. 

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