ghastly vs plug-ugly

ghastly

adj
  • Extremely bad. 

  • Like a ghost in appearance; death-like; pale; pallid; dismal. 

  • Horrifyingly shocking. 

adv
  • In a ghastly manner. 

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 ghastly and plug-ugly occurred in a corpus of books? (source: Google Ngram Viewer )