obstruent vs stifling

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. 

stifling

adj
  • That stifles. 

  • The heat was stifling; it seemed hard to breathe and the exertion of rolling over on the bed seemed too much. 

noun
  • The act by which something is stifled. 

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