abet vs restrain

abet

verb
  • To support, countenance, maintain, uphold, or aid (any good cause, opinion, or action); to maintain. 

  • To incite; to assist or encourage by aid or countenance in crime. 

restrain

verb
  • To control or keep in check. 

  • To deprive of liberty. 

  • To strain again. 

  • To restrict or limit. 

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