more vs not so much

more

verb
  • To root up. 

det
  • Additional; further. 

  • Bigger, stronger, or more valuable. 

adv
  • Used in addition to an inflected comparative form. 

  • To a greater degree or extent. 

  • Used to form the comparative form of adjectives and adverbs. 

  • In negative constructions: any further, any longer; any more. 

pron
  • A greater number or quantity (of something). 

  • An extra or additional quantity (of something). 

noun
  • A plant; flower; shrub. 

  • A root; stock. 

not so much

phrase
  • Indicates that the speaker identifies with a prior statement to a much lesser degree (or not at all) than the other person. 

  • Indicates that one factor is much more relevant or important than another. 

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