coward vs dough-faced

coward

adj

  • Cowardly. 

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

noun

  • A person who lacks courage. 

dough-faced

adj

  • cowardly 

  • obsequious; fawning; pliable 

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