nonsharp vs prosaic

nonsharp

adj
  • dulled or intentionally blunt. 

  • Pertaining to a certain type of distillation. 

prosaic

adj
  • Overly plain, simple or commonplace, to the point of being boring. 

  • Straightforward; matter-of-fact; lacking the feeling or elegance of poetry. 

  • Pertaining to or having the characteristics of prose. 

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