faulty vs second-rate

faulty

adj
  • Having or displaying faults; not perfect; not adequate or acceptable. 

second-rate

adj
  • Of mediocre quality; not first-rate. 

  • Of a Royal Navy ship of the line in the Napoleonic Era: having 80–98 guns across three gun decks, a complement of 700–750, and weighing approximately 2,200 tons burthen. 

noun
  • A second-rate ship of the line. 

How often have the words faulty and second-rate occurred in a corpus of books? (source: Google Ngram Viewer )