equal vs proportional

equal

adj
  • Adequate; sufficiently capable or qualified. 

  • Intended for voices of one kind only, either all male or all female; not mixed. 

  • The same in all respects. 

  • Exactly identical, having the same value. 

noun
  • A person or thing of equal status to others. 

verb
  • To make equivalent to; to cause to match. 

  • To have as its consequence. 

  • To be equal to, to have the same value as; to correspond to. 

proportional

adj
  • In proportion (to), proportionate. 

  • Of a typeface, having characters with natural (non-uniform) width (in contrast to monospace typefaces). 

  • At a constant ratio (to). Two magnitudes (numbers) are said to be proportional if the second varies in a direct relation arithmetically to the first. Symbol: ∝. 

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