constrain vs delight

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. 

delight

verb
  • To give delight to; to affect with great pleasure; to please highly. 

  • To have or take great pleasure. 

noun
  • Joy; pleasure. 

  • Something that gives great joy or pleasure. 

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