motormouthed vs voluble

motormouthed

adj
  • Being a motor mouth; inclined to talk too much. 

voluble

adj
  • Fluent or having a ready flow of speech. 

  • Twisting and turning like a vine. 

  • Easily rolling or turning; having a fluid, undulating motion. 

  • Of thoughts, feelings, or something that is expressed: expressed readily or at length and in a fluent manner. 

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