fall away vs forlet

fall away

verb
  • To perish; to vanish; to be lost. 

  • To cease to support a person or cause. 

  • To get worse. 

  • To diminish in size, weight, or intensity. 

forlet

verb
  • To abandon; give up; leave; leave behind; forsake; desert; neglect. 

  • To forget. 

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