deep water vs quandary

deep water

noun
  • A difficult or embarrassing situation. 

  • Waters suitable for deep-draft ships, especially ocean-going. 

  • Used other than figuratively or idiomatically: see deep, water. 

quandary

noun
  • A dilemma, a difficult decision or choice. 

  • A state of not knowing what to decide; a state of difficulty or perplexity; a state of uncertainty, hesitation or puzzlement. 

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