secede vs take off

secede

verb
  • To split from or to withdraw from membership of a political union, an alliance or an organisation. 

  • To split or to withdraw one or more constituent entities from membership of a political union, an alliance or an organisation. 

take off

verb
  • To remove. 

  • To depart. 

  • To absent oneself from (work or other responsibility), especially with permission. 

  • To quantify. 

  • To leave the ground and begin flight; to ascend into the air. 

  • To imitate, often in a satirical manner. 

  • To become successful, to flourish. 

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