promptness vs stoppage

promptness

noun
  • The habit of adhering to a designated time. 

  • The habit or characteristic of doing things without delay. 

stoppage

noun
  • Something that forms an obstacle to continued activity; a blockage or obstruction. 

  • A pause or halt of some activity. 

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