introduce vs override

introduce

verb
  • To add (something) to a system, a mixture, or a container. 

  • To cause (someone) to be acquainted (with someone else). 

  • To bring (something) into practice. 

  • To make (something or someone) known by formal announcement or recommendation. 

override

verb
  • To give commands of a higher priority to an automated system; to take manual control of an automated system 

  • To define a new behaviour of a method by creating the same method of the superclass with the same name and signature. 

  • To ride a horse too hard. 

  • To ride over the top of something, usually forcibly. 

  • To ride across or beyond something. 

  • To counteract the normal operation of something; to countermand with orders of higher priority. 

noun
  • A royalty. 

  • A method with the same name and signature as a method in a superclass, which runs instead of that method, when an object of the subclass is involved. 

  • A mechanism, device or procedure used to counteract an automatic control. 

  • A device for prioritizing audio signals, such that certain signals receive priority over others. 

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