matter-of-fact vs unemotional

matter-of-fact

adj
  • lacking emotion or colour 

  • of, or relating to facts only; literal, realistic 

  • straightforward, blunt, frank; treating the situation as normal; not embarrassed, coy, or dramatic. 

unemotional

adj
  • Showing little or no feeling. 

  • Reasoned and objective, involving reason or intellect rather than feelings. 

How often have the words matter-of-fact and unemotional occurred in a corpus of books? (source: Google Ngram Viewer )