adapt vs fit in

adapt

verb
  • To make suitable; to make to correspond; to fit or suit 

  • To fit by alteration; to modify or remodel for a different purpose; to adjust 

  • To make by altering or fitting something else; to produce by change of form or character 

  • To make oneself comfortable to a new thing. 

adj
  • Adapted; fit; suited; suitable. 

fit in

verb
  • To suit or conform to. 

  • Used other than figuratively or idiomatically: see fit, in. 

  • To be of a like type with others; to be socially accepted. 

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