The document summarizes the key components of Gross Domestic Product (GDP):
1) Consumption (C) which includes durable goods, non-durable goods, and services. Durable goods have a longer lifespan while non-durable goods have a shorter lifespan. Services are the fastest growing component.
2) Investment (I) which refers to business investment in capital.
3) Government spending (G) which is the sum spent on final goods and services by the government including salaries and weapons.
4) Net exports (X-M) which is gross exports minus imports of goods and services.