coerce vs put the frighteners on

coerce

verb
  • To restrain by force, especially by law or authority; to repress; to curb. 

  • To use force, threat, fraud, or intimidation in an attempt to compel one to act against their will. 

  • To force an attribute, normally of a data type, to take on the attribute of another data type. 

put the frighteners on

How often have the words coerce and put the frighteners on occurred in a corpus of books? (source: Google Ngram Viewer )