collectively vs inextricably

collectively

adv
  • In a collective manner; viewed together as a whole; to be treated as a single unit, rather than the items that make up the collection separately. 

inextricably

adv
  • In an inextricable manner. 

  • To an inextricable degree. 

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