plug-ugly vs tough guy

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. 

tough guy

noun
  • A man known for his physical and/or emotional resilience. 

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