CENTURY

A century is a period of 100 years. The term is derived from the Latin word "centum," which means "hundred." Centuries are often used to describe significant periods in history, such as the 20th century, which spanned from 1901 to 2000. In the Gregorian calendar, a century is a span of 36,524 days, or 36,525 days if it includes a leap year. Centuries are also used in various contexts, such as in the naming of buildings, events, and even in the measurement of time in some cultures. For example, the 21st century began on January 1, 2001, and will end on December 31, 2100. The term "century" can also refer to a specific group of people who lived during a particular 100-year period, such as the "20th-century man." In some contexts, the term "century" can also refer to a specific number of years, such as a "century-old" tree that is 100 years old.