plug-ugly vs unattractive

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. 

unattractive

noun
  • An aesthetically unattractive person 

adj
  • Not handsome or beautiful or appealing. 

  • Lacking the power to attract interest. 

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