The vocabulary of economists

Key lexical nouns in Economic Journals:

American Economic Review, 1990s: equation, model, equilibrium

Economic Journal (UK), 1990s: pension, unemployment, wages

Journal of Economic Perspectives, 1990s: insurance, liability, health

American Journal of Economics and Sociology, 1990s: land, property, poverty

Here is the cite and a longer discussion.  The paper has many more interesting results.