coercive vs constrained

coercive

adj
  • Displaying a tendency or intent to coerce. 

  • Such that the ratio of |F(x)| to x approaches infinity as x approaches infinity. 

constrained

adj
  • Forced; compelled. 

  • Kept within close bounds; confined. 

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