is grandparents immediate family
Members of the immediate family includes spouses, parents, brothers, sisters, sons and/or daughters. Members of the extended family may include grandparents, aunts, uncles, cousins, nephews, nieces, and/or siblings-in-law. Sometimes these are also considered members of the immediate family, depending on an individual's specific relationship. In most societies, the family is the principal institution for the socialization of children.