debigulate vs fall away

debigulate

verb
  • To reduce or shrink; to make or become smaller. 

fall away

verb
  • To diminish in size, weight, or intensity. 

  • To cease to support a person or cause. 

  • To get worse. 

  • To perish; to vanish; to be lost. 

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