indivisibility vs tie-in

indivisibility

noun
  • An indivisible factor or object. 

  • The state of being indivisible. The state incapable of being divided. 

tie-in

noun
  • An association or connection between things. 

  • Something that is related or connected to another thing. 

  • An authorized product based on a media property, such as a film or video game, by way of cross-promotion. 

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