cold fish vs demonstrative

cold fish

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

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

demonstrative

adj
  • given to open displays of emotion 

  • that specifies the thing or person referred to 

  • that serves to demonstrate, show or prove 

noun
  • A demonstrative pronoun. 

  • A demonstrative adjective. 

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