The document discusses key concepts related to gross domestic product (GDP) including:
1) The four expenditure components of GDP - personal consumption, gross private investment, government consumption and investment, and net exports. Each component is further broken down into categories.
2) Real GDP data for the Philippines from 2011-2013 and the percentage distribution of the four GDP expenditure components.
3) The difference between GDP and GNP, with GDP being a better measure of an economy's total output.
4) The difference between nominal GDP and real GDP, with real GDP being a better measure of economic growth.