damper vs wowser

damper

noun
  • A contrivance (sordine), as in a pianoforte, to deaden vibrations; or, as in other pieces of mechanism, to check some action at a particular time. 

  • A device that decreases the oscillations of a system. 

  • A shock absorber. 

  • A valve or movable plate in the flue or other part of a stove, furnace, etc., used to check or regulate the draught of air. 

  • Bread made from a basic recipe of flour, water, milk, and salt, but without yeast. 

  • Something that kills the mood. 

wowser

noun
  • One with strong moral views against excessive consumption of alcohol, gambling, pornography, etc., who seeks to promulgate those views. 

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