chelp vs rumour

chelp

verb
  • To gossip, particularly in a forthright manner. 

  • To speak rudely or out of turn. 

rumour

verb
  • Commonwealth standard spelling of rumor. 

noun
  • Britain, Canada, New Zealand, Australia, and Ireland spelling of rumor 

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