constrain vs cramp

constrain

verb
  • To force physically, by strong persuasion or pressuring; to compel; to oblige. 

  • To keep within close bounds; to confine. 

  • To reduce a result in response to limited resources. 

cramp

verb
  • To prohibit movement or expression of. 

  • (of a muscle) To contract painfully and uncontrollably. 

  • To form on a cramp. 

  • To affect with cramps or spasms. 

  • To fasten or hold with, or as if with, a cramp iron. 

  • To restrain to a specific physical position, as if with a cramp. 

  • To bind together; to unite. 

noun
  • A clamp for carpentry or masonry. 

  • A painful contraction of a muscle which cannot be controlled. 

  • That which confines or contracts. 

  • A piece of wood having a curve corresponding to that of the upper part of the instep, on which the upper leather of a boot is stretched to give it the requisite shape. 

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