awful vs plug-ugly

awful

adj
  • Very bad. 

  • Exceedingly great; usually applied intensively. 

adv
  • Very, extremely. 

  • Awfully; dreadfully; terribly. 

plug-ugly

adj
  • Very ugly. 

noun
  • An ugly person. 

  • A member of an American nativist street gang that operated in the west side of Baltimore, Maryland, from 1854 to 1865. 

How often have the words awful and plug-ugly occurred in a corpus of books? (source: Google Ngram Viewer )