curtail vs perpetuate

curtail

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

  • To limit or restrict, keep in check. 

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

perpetuate

verb
  • To prolong the existence of (something) by repetition; to reinforce. 

  • To make (something) perpetual; to make (something) continue for an indefinite time; also, to preserve (something) from extinction or oblivion. 

  • To record (the testimony of a witness) which may be lost before a matter comes to trial. 

adj
  • Perpetual, or made perpetual; continued for an indefinite time. 

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