nigh vs proportionally

nigh

adv
  • Almost, nearly. 

prep
  • near; close to 

adj
  • Not remote in degree, kindred, circumstances, etc.; closely allied; intimate. 

verb
  • to draw nigh (to); to approach; to come near 

proportionally

adv
  • In proportion; in due degree; adapted relatively. 

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