Illiteracy rate (adult). The percentage of people, ages 15 and above, who cannot, with understanding, read and write a short, simple statement about their everyday life.

Indigenous (people, village). Those who originated in, or who are native to, a particular region or environment.

Industrial country. A country in which historically the greatest part of output has been accounted for by industry. However, the term is widely used to signify high-income economies.

Infrastructure. The basic facilities, services, and installations needed for the functioning of a community or society, such as transportation and communications systems, water and power lines, and public institutions including schools, post offices, and prisons.

Macroeconomics. The economic behavior of aggregates, such as income, employment, output, and the like, on a national scale.

Microfinance. A financial system that works for the poor—especially those who wish to start or expand their small businesses—by offering them services such as savings, loans, transfers, and insurance, which they could not obtain from commercial banks.

Nongovernmental organization. Sometimes called voluntary agencies, these are private (not affiliated with a governmental body or institution), independent, nonprofit organizations of a charitable, research, or educational nature.

Productivity. The output of goods and services per unit of input—for example, per unit of labor (labor productivity), per unit of energy (such as GNP per unit of energy use), or per unit of all production resources combined. Also known as economic productivity or efficiency.

Quality of life. People's overall well-being. Quality of life is difficult to measure (whether for an individual, group, or nation) because in addition to material well-being (see standard of living), it includes such intangible components as the quality of the environment, national security, personal safety, and political and economic freedoms.

Roma. Europe's largest and most vulnerable minority. With no historical homeland, these "gypsies" live in nearly all countries of Europe and Central Asia and are an extremely diverse minority, with multiple subgroups based on linguistic, historical, and occupational distinctions. Size estimates of Europe's Roma population range from 7 million to 9 million, similar to the total population of many smaller European countries.

Services. Intangible goods that are often produced and consumed at the same time. An example is education: Students consume a lesson—an educational service—at the same time a teacher produces it. The service sector of the economy includes hotels, restaurants, and wholesale and retail trade; transport, storage, and communications; financing, insurance, real estate, and business services; community and social services (such as education and health care); and personal services.

Standard of living. The level of well-being (of an individual, a group, or the population of a country) as measured by the level of income (for example, GNP per capita)

Tenement. Apartment house, usually in a city, that meets only minimum standards of sanitation, safety, and comfort and occupied by poorer families.

The pie chart shows the worldwide distribution of sales of Coca-Cola in the year 2000 and the graph shows the change in share prices between 1996 and 2001.

Since 1996, share prices for Coca-Cola have fluctuated. In that year, shares were valued at approximately $35. Between 1996 and 1997, however, prices rose significantly to $70 per share. They dipped a little in mid-1997 and then peaked at $80 per share in mid-98. From then until 2000 their value fell consistently but there was a slight rise in mid-2000.