An individual nerve cell is a neurone. Bundles of these form nerves that run around your body transmitting information. Bundles of these are called possible a nerve trunk or nerve ganglion.
The five goals are typically divided into the three that are most important for macroeconomics (the macroeconomic goals of full employment, stability and economic growth) and the two that are most important for microeconomics (the microeconomic goals of efficiency and equity).
Keynesian economics recommends that during a recession (economic downturn during which unemployment is high and the production of goods and services is low) the national government should increase its spending (to create jobs) and decrease taxes (so that people have more money to spend) to stimulate the economy.