concurrency vs seemliness

concurrency

noun
  • The property or an instance of being concurrent; something that happens at the same time as something else. 

  • A property of systems where several processes execute at the same time. 

  • A stretch of road that is shared between two or more numbered or named routes. 

seemliness

noun
  • The property of being seemly, appropriateness of conduct or behavior. 

  • The result or product of being seemly. 

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