gab vs gabble

gab

verb
  • To talk or chatter a lot, usually on trivial subjects. 

noun
  • The mouth or gob. 

  • Idle chatter. 

  • One of the open-forked ends of rods controlling reversing in early steam engines. 

gabble

verb
  • To talk fast, idly, foolishly, or without meaning. 

  • To utter inarticulate sounds with rapidity. 

noun
  • Confused or unintelligible speech. 

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