coward vs faintheart

coward

noun

  • A person who lacks courage. 

adj

  • Cowardly. 

  • Borne in the escutcheon with his tail doubled between his legs. 

faintheart

noun

  • A person who is irresolute or fearful. 

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