nigh vs or thereabouts

nigh

prep
  • near; close to 

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

adv
  • Almost, nearly. 

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

or thereabouts

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