error-prone vs flesh and blood

error-prone

adj

  • In the habit of making errors. 

flesh and blood

noun

  • Human nature. 

  • A human body; a person generally. 

  • One's family, or member of one's family. 

adj

  • Real; substantial. 

  • Consisting of flesh, blood, and other substances associated with animals or humans. 

How often have the words error-prone and flesh and blood occurred in a corpus of books? (source: Google Ngram Viewer )