due date vs interruption

due date

noun
  • The date by which a task is supposed to be completed. 

  • The date on which a pregnant woman is expected to give birth. 

  • The date by which a book (or other item) borrowed from a library must be returned. 

  • The date of payment in financial arrangements. 

interruption

noun
  • A time interval during which there is a cessation of something. 

  • The act of interrupting, or the state of being interrupted. 

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