descending vs relegation

descending

noun
  • A descent. 

adj
  • Ordered such that each element is less than or equal to the previous element. 

  • Moving or sloping downwards. 

  • Becoming lower in pitch. 

  • Causing a sequence to follow a descending order. 

relegation

noun
  • The act of being relegated 

  • Moving from one division to a lower one, due to poor results 

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