let know vs mislead

let know

verb
  • To inform (someone) (of something). 

mislead

noun
  • That which is deceptive or untruthful (e.g. a falsehood, deception, untruth, or ruse). 

  • A wrong or bad lead; a leading in the wrong direction. 

verb
  • To lead astray, in a false direction. 

  • To deceptively trick into something wrong. 

  • To deceive by telling lies or otherwise giving a false impression. 

  • To accidentally or intentionally confuse. 

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