The following outline is provided as an overview of and topical guide to children: Children – biologically, a child (plural: children) is generally a human between the stages of birth and puberty. Some definitions include the unborn (termed fetus). The legal definition of "child" generally refers to a minor, otherwise known as a person younger than the age of majority. "Child" may also describe a relationship with a parent or authority figure, or signify group membership in a clan, tribe, or religion; it can also signify being strongly affected by a specific time, place, or circumstance, as in "a child of nature" or "a child of the Sixties."