deal with vs iron out

deal with

verb
  • To come to terms with; to overcome any difficulties presented by. 

  • To be in charge of, act on, or dispose of. 

  • To behave in a certain way towards. 

  • To consider, as an example. 

  • To handle verbally or in some form of artistic expression; to address or discuss as a subject. 

  • To take action with respect to (someone or something). 

iron out

verb
  • To resolve (a dispute); to solve (a problem). 

  • To remove (a crease or creases) with an iron. 

How often have the words deal with and iron out occurred in a corpus of books? (source: Google Ngram Viewer )