override vs step on

override

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

  • 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. 

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. 

step on

verb
  • to adulterate a drug for the purpose of increasing its bulk, and therefore its profit; to dilute, cut. 

  • Used other than figuratively or idiomatically: see step, on. 

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