expiration vs occlusive

expiration

noun
  • That which is produced by breathing out, as a sound. 

  • A cessation, extinction, ending 

  • Emission of volatile matter; exhalation. 

  • The last emission of breath; death. 

  • The act of expiring. 

  • The act or process of breathing out, or forcing air from the lungs through the nose or mouth 

occlusive

noun
  • A phoneme produced by obstructing airflow in the vocal tract, but not necessarily in the nasal tract. 

  • A product that forms a protective film and traps moisture against the skin. 

adj
  • That tends to occlude. 

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