let in vs rebut

let in

verb
  • To associate with. 

  • To let someone or something come in; to admit someone or something in. 

  • To divulge one's inner thoughts to (someone), making oneself emotionally vulnerable to them; to open up to (someone). 

rebut

verb
  • To drive back or beat back; to repulse. 

  • To deny the truth of something, especially by presenting arguments that disprove it. 

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