placing vs ranking

placing

noun
  • The action by which something is placed; placement; positioning. 

  • The position of a competitor at the end of a race. 

  • The condition of being placed. 

ranking

noun
  • One’s relative placement in a list. 

adj
  • Having a specified rank. 

  • Superior in rank. 

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