obstruent vs off-putting

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. 

off-putting

adj
  • Disconcerting, annoying or repulsive; tending to put off. 

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