consequential vs mentionable

consequential

adj
  • Important or significant. 

  • Having significant consequences; of importance. 

  • Following as a result. 

  • Self-important. 

mentionable

adj
  • Important or worthy of note. 

  • Suitable to be openly talked about, or mentioned; not taboo. 

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