easing vs reducer

easing

noun
  • The act by which something is eased. 

reducer

noun
  • A reducing agent. 

  • A liquid used in the process of developing a negative to reduce its darkness. 

  • A function that takes state and action as arguments and returns the next state of the app. 

  • A hydraulic device for reducing pressure and hence increasing movement, used to transmit the load from the hydraulic support of the lower shackle to the lever weighing apparatus in some kinds of heavy testing machine. 

  • A component used to connect two pipes of different bores. 

  • Something that reduces. 

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