carry out vs discontinue

carry out

verb
  • To execute or perform; to put into operation; to do. 

  • To hold while moving it out. 

  • To fulfill. 

discontinue

verb
  • To interrupt the continuance of; to put an end to, especially as regards commercial productions; to stop producing, making, or supplying. 

  • To consciously cease the ingestion or administration of (a pharmaceutical drug). 

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