what is the difference between pure economics and applied economics
Applied economics Léon Walras, for example, planned to organize his main work into volumes on "pure," "applied," and "social" economics. Jaffé (1983) describes Walras's plan as involving making a distinction between that which is true, is useful, and is just. In using the term true, Walras referred to propositions that necessarily followed from the nature of things. Pure economics then involves pure logic. Applied economics involves examining ways to achieve practical goals and requires the making judgments about whether or not the logic of pure economics was relevant to the real world. Social economics also presumed pure economics, but dealt with a different range of questions than did applied economics.[8]
Keynesian economics Macroeconomics is the study of the factors applying to an economy as a whole, such as the overall price level, the interest rate, and the level of employment (or equivalently, of income/output measured in real terms).