Economics is frequently accused of marginalizing much of reality. A Venn diagram approach to overlapping domains could be an excellent research strategy. Lets look at possible overlapping circles (can be seen as sets).

• Economy
  Society
  Economics
  Democracy
  Tyranny
  Technocracy.
  Politics
  Demographics.
  Governance
  Chambers such as congress in te US.
  Bureaucracy

What seems clear is how limited that any  one, or just a few, is as a set of questions. The questions of our time seem to require all of them because often the next step in exploring a question would be into another domain. And of course many more could be added.