This document lists 13 key economic concepts: (1) the loanable funds market, (2) monetary policy tools, (3) the quantity equation, (4) Okun's law, (5) the multiplier effect and crowding out effect, (6) automatic stabilizers, (7) risk aversion and risk taking, (8) the Fisher effect, (9) aggregate models, (10) shifts in aggregate demand, (11) the Phillips curve, (12) protectionist policies, and (13) capital inflows and outflows.