come into vs get on to

come into

verb
  • Used other than figuratively or idiomatically: See come and into. 

  • To inherit (money). 

  • To enter the initial phase of; to commence. 

  • To be a factor in. 

get on to

verb
  • Used other than figuratively or idiomatically: see get on, to. 

  • To contact (someone) in order to raise or discuss a certain matter. 

  • To progress to; to start working on. 

How often have the words come into and get on to occurred in a corpus of books? (source: Google Ngram Viewer )