in contention vs ongoing

in contention

prep
  • Used other than figuratively or idiomatically: see in, contention. 

  • Contending for a title or championship. 

ongoing

noun
  • Something that is going on; a happening. 

adj
  • Continuing, permanent, lasting. 

  • Presently or currently happening; being in progress. 

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