hindering vs obstruent

hindering

adj
  • Harmful; of or relating to that which hinders. 

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 hindering and obstruent occurred in a corpus of books? (source: Google Ngram Viewer )