Answer:
FAMILY, a group of persons united by the ties of marriage, blood, or adoption, constituting a single household and interacting with each other in their respective social positions, usually those of spouses, parents, children, and siblings. The family group should be distinguished from a household, which may include boarders and roomers sharing a common residence. It should also be differentiated from a kindred (which also concerns blood lines), because a kindred may be divided into several households. Frequently the family is not differentiated from the marriage pair, but the essence of the family group is the parent-child relationship, which may be absent from many marriage pairs.
RELATIVES, is a person who is part of your family. Parents, siblings, uncles, aunts, grandparents, cousins, nieces and nephews — they're all relatives.
