repeating vs reversal

repeating

noun
  • Repetition. 

adj
  • That repeats; repetitive. 

  • Of a decimal: recurring. 

  • Of a firearm: capable of firing multiple times without needing recharging. 

reversal

noun
  • An instance of reversing. 

  • A change in fortune; a change from being successful to having problems. 

  • The state of being reversed. 

adj
  • Intended to reverse; implying reversal. 

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