cold fish vs harsh

cold fish

noun
  • A heartless individual; a person lacking empathy and emotion. 

  • A sexual partner who, during sex, lacks vigor or emotional reciprocity. 

harsh

adj
  • Severe or cruel. 

  • Unpleasantly rough to the touch or other senses. 

verb
  • To negatively criticize. 

  • To put a damper on (a mood). 

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