damp vs encourage

damp

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. 

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

  • Moisture; humidity; dampness. 

encourage

verb
  • To mentally support; to motivate, give courage, hope or spirit. 

  • To spur on, strongly recommend. 

  • To foster, give help or patronage 

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