snarf vs tuck into

snarf

verb
  • To eat or consume greedily. 

  • To take something by dubious means, but without the connotations of stealing; to take something without regard to etiquette. 

  • To slurp (computing slang sense); to load in entirety; to copy as a whole. 

tuck into

verb
  • To eat, especially with gusto. 

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