equation vs ratio

equation

noun
  • An assertion that two expressions are equal, expressed by writing the two expressions separated by an equal sign; from which one is to determine a particular quantity. 

  • The act or process of equating two or more things, or the state of those things being equal (that is, identical). 

  • A small correction to observed values to remove the effects of systematic errors in an observation. 

ratio

noun
  • A number representing a comparison between two named things. 

  • The number of comments to a post or other expression on social media relative to the number of likes; a high ratio suggests disagreement with the contents of the original post. 

  • The relative magnitudes of two quantities (usually expressed as a quotient). 

verb
  • To respond to a post or message on social media in a greater number than the number of likes the post receives, especially to condemn or mock the original poster. 

intj
  • Indicates disagreement with a post the user disagrees with or dislikes. 

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