bigger vs less

bigger

verb
  • To make or become bigger. 

less

prep
  • Minus; not including 

det
  • Fewer; a smaller number of. 

  • A smaller amount of; not as much. 

adv
  • To a smaller extent or degree. 

  • Used for constructing syntactic diminutive comparatives of adjectives and adverbs. 

noun
  • A smaller amount or quantity. 

conj
  • unless 

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