if not vs minus

if not

adv
  • Used to link a semantically weaker word to a semantically stronger word following the adverb, both sharing the same basic meaning, indicating the increased likelihood of the former. 

minus

prep
  • Made less or reduced by (followed by an expression of number or quantity). 

  • Without; deprived of. 

adj
  • Being a negative quantity; pertaining to a deficit or reduction. 

  • That is below zero by (a specified amount) on a scale. 

  • Ranking just below (a designated rating). 

noun
  • The minus sign (−). 

  • A negative quantity. 

  • A downside or disadvantage. 

verb
  • To subtract. 

How often have the words if not and minus occurred in a corpus of books? (source: Google Ngram Viewer )