immediacy vs plainness

immediacy

noun
  • The quality of being immediate, of happening right away. 

  • Immediate awareness or apprehension. 

  • Lack of mediation; directness. 

plainness

noun
  • The product or result of being plain 

  • The condition of being plain (in all senses) 

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