orate vs talk at

orate

verb
  • To speak formally; to give a speech. 

  • To speak passionately; to preach for or against something. 

adj
  • Competent in oracy; having good speaking skills. 

talk at

verb
  • To speak with; to have a conversation with. 

  • To speak with (someone) without truly listening to their response or interacting meaningfully. 

How often have the words orate and talk at occurred in a corpus of books? (source: Google Ngram Viewer )