insult vs oblige

insult

verb
  • To be insensitive, insolent, or rude to (somebody); to affront or demean (someone). 

noun
  • Something causing disease or injury to the body or bodily processes; the injury so caused. 

  • Something that causes offence (for example, by being of an unacceptable quality). 

  • Action or form of speech deliberately intended to be rude; (countable) a particular act or statement having this effect. 

oblige

verb
  • To be indebted to someone. 

  • To constrain someone by force or by social, moral or legal means. 

  • To do (someone) a service or favour (hence, originally, creating an obligation). 

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