obstruent vs resonant

obstruent

noun
  • Hypernym: consonant 

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

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

adj
  • Causing obstruction; blocking up. 

resonant

noun
  • A sonorant vowel or consonant. 

adj
  • Resounding, echoing. 

  • Adjusted as to dimensions so that currents or electric surgings are produced by the passage of electric waves of a given frequency. 

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