personification vs plain speech

personification

noun
  • An artistic representation of an abstract quality as a human 

  • A person, thing or name typifying a certain quality or idea; an embodiment or exemplification. 

  • A literary device in which an inanimate object or an idea is given human qualities. 

plain speech

How often have the words personification and plain speech occurred in a corpus of books? (source: Google Ngram Viewer )