fill in vs take over

fill in

verb
  • To substitute for somebody or something. 

  • To complete a form or questionnaire with requested information. 

  • To beat up; to physically assault. 

  • To fill; to replace material that is absent or has been removed. 

  • To inform somebody, especially to supply someone missing or missed information. 

take over

verb
  • To appropriate something without permission. 

  • To become more successful (than someone or something else). 

  • To assume control of something, especially by force; to usurp. 

  • To adopt a further responsibility or duty. 

  • To buy out the ownership of a business. 

  • To relieve someone temporarily. 

  • To annex a territory by conquest or invasion. 

  • Used other than figuratively or idiomatically: see take, over. 

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