order of magnitude vs proportion

order of magnitude

noun
  • The class of scale or magnitude of any amount, where each class contains values of a fixed ratio (most often 10) to the class preceding it. For example, something that is 2 orders of magnitude larger is 100 times larger, something that is 3 orders of magnitude larger is 1000 times larger, and something that is 6 orders of magnitude larger is a million times larger, because 10² = 100, 10³ = 1000, and 10⁶ = a million. 

proportion

noun
  • Size. 

  • The relation of one part to another or to the whole with respect to magnitude, quantity, or degree. 

  • Harmonious relation of parts to each other or to the whole. 

  • A quantity of something that is part of the whole amount or number. 

  • A statement of equality between two ratios. 

  • Proper or equal share. 

verb
  • To form symmetrically. 

  • To set or render in proportion. 

  • To divide into proper shares; to apportion. 

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