ill-looking vs unsound

ill-looking

adj
  • having an unhealthy appearance 

  • unattractive; ugly 

  • of evil or sinister appearance 

unsound

adj
  • Infirm, diseased. 

  • Not whole, not solid, defective. 

  • Not good, unreliable. 

How often have the words ill-looking and unsound occurred in a corpus of books? (source: Google Ngram Viewer )