damp vs suffocating

damp

noun
  • Moisture; humidity; dampness. 

  • A gaseous product, formed in coal mines, old wells, pits, etc. 

verb
  • To suppress vibrations (mechanical) or oscillations (electrical) by converting energy to heat (or some other form of energy). 

adj
  • In a state between dry and wet; moderately wet; moist. 

  • Despondent; dispirited, downcast. 

suffocating

noun
  • suffocation 

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