coherent vs obstruent

coherent

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

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

  • 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. 

  • Orderly, logical and consistent. 

  • Aesthetically ordered. 

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

obstruent

adj
  • Causing obstruction; blocking up. 

noun
  • A consonant sound formed by obstructing the airway, causing turbulence; a plosive, fricative, or affricate. 

  • Hypernym: consonant 

  • Anything that obstructs, especially in the passages of the body. 

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