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Age
Age is a chronological characteristic and a stage of an individual's development over the course of their life. It represents an objective measure of time used to assess a person's physical, psychological, and social development. Age can be measured in units of time such as years, months, and days.
It is important to note that age is not only the chronological length of a person's life but also a sociocultural category that may include certain expectations, roles, and stereotypes associated with a particular age. For example, different cultures and societies may have different ideas about which achievements and events are typical of particular age groups.