drawl vs talk to oneself

drawl

verb
  • To speak with a slow, spiritless utterance, from affectation, laziness, or lack of interest. 

  • To move slowly and heavily; move in a dull, slow, lazy manner. 

  • To utter or pronounce in a dull, spiritless tone, as if by dragging out the utterance. 

  • To drag on slowly and heavily; to while or dawdle away time indolently. 

noun
  • A way of speaking slowly while lengthening vowel sounds and running words together. Characteristic of some southern US accents, as well as Scots. 

talk to oneself

verb
  • To say one's thoughts aloud, particularly while also not conversing with anyone else. 

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