clepe vs dob in

clepe

verb
  • To tell lies about; inform against (someone). 

  • To be loquacious; tattle; gossip. 

  • To report; relate; tell. 

noun
  • A cry; an appeal; a call. 

dob in

verb
  • To betray someone by informing on them. 

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