articulate vs coherent

articulate

adj
  • Clear; effective. 

  • Speaking in a clear and effective manner. 

  • Distinctly marked off. 

  • Consisting of segments united by joints. 

verb
  • To bend or hinge something at intervals, or to allow or build something so that it can bend. 

  • To make clear or effective. 

  • To explain; to put into words; to make something specific. 

  • To speak clearly; to enunciate. 

  • to form a joint or connect by joints 

  • to attack a note, as by tonguing, slurring, bowing, etc. 

noun
  • An animal of the subkingdom Articulata. 

coherent

adj
  • Orderly, logical and consistent. 

  • Of waves having the same direction, wavelength and phase, as light in a laser. 

  • Attaching or pressing against an organ of the same nature. 

  • Unified; sticking together; making up a whole. 

  • Belonging to a specific class of sheaves having particularly manageable properties closely linked to the geometrical properties of the underlying space. 

  • Aesthetically ordered. 

  • Having a natural or due agreement of parts; harmonious: a coherent design. 

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