contribute vs curtail

contribute

verb
  • To give something that is or becomes part of a larger whole. 

curtail

noun
  • A scroll termination, as of a step, etc. 

verb
  • To shorten or abridge the duration of something; to truncate. 

  • To limit or restrict, keep in check. 

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