inextricably vs mutually

inextricably

adv
  • In an inextricable manner. 

  • To an inextricable degree. 

mutually

adv
  • in the same way, each to the other; reciprocally 

  • in a shared manner; equally; affecting all parties the same way 

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