plug-ugly vs ugliness

plug-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. 

adj
  • Very ugly. 

ugliness

noun
  • The condition of being ugly. 

  • An unsightly or frightful object. 

  • Unpleasant behaviour. 

  • Everything that's realistic has some sort of ugliness in it. Even a flower is ugly when it wilts, a bird when it seeks its prey, the ocean when it becomes violent. Sharon Tate 

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