strong as a horse vs virile

strong as a horse

adj
  • Very strong. 

virile

adj
  • Manly; having characteristics associated with being male, such as strength; exhibiting masculine traits to an exaggerated degree such as strength, forcefulness or vigor. 

  • Pertaining to a grammatical gender used in plurals of some Slavic languages, corresponding to the personal masculine animate nouns. 

  • Possessing high sexual drive and capacity for sexual intercourse. 

How often have the words strong as a horse and virile occurred in a corpus of books? (source: Google Ngram Viewer )