ridicule vs underestimate

ridicule

verb
  • to criticize or disapprove of someone or something through scornful jocularity; to make fun of 

noun
  • An object of sport or laughter; a laughing stock. 

  • The quality of being ridiculous; ridiculousness. 

  • derision; mocking or humiliating words or behaviour 

  • A small woman's handbag; a reticule. 

underestimate

verb
  • To perceive (someone or something) as having a lower value, quantity, worth, etc., than what he/she/it actually has. 

noun
  • An estimate that is too low. 

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