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Family is a single word, with many different meanings. People have many ways of defining a family and what being a part of a family means to them. Families differ in terms of economic, cultural, social, and many other facets, but what every family has in common is that the people who call it a family are making clear that those people are important in some way to the person calling them his family.
family is
a fundamental social group in society typically consisting of one or two parents and their children." While this definition is a good starting point, there are several modern family structures that are excluded by this definition, such as childless couples or other variations on the family unit. Another definition is "Two or more people who share goals and values, have long-term commitments to one another and reside usually in the same dwelling." This definition encompasses the vast majority of modern family units; for the purposes of this article, the second definition will be used.
friends as family
Many people consider friends to be as close or even closer than extended (or immediate) family. People who have lost close family members may create a family unit of friends with similar interests and goals to become replacements or enhancements to a lacking family structure. This type of family unit, while untraditional, can be just as close, if not closer, than a traditional structure. Friends are chosen by an individual; at times, these people may be more special or important than the family a person was born with. In addition, some people who have supportive families also have an extensive network of friends who they consider to be a second family or as additions to their blood or legal relatives.
pets as family
Pets can also become members of a family unit. Pets add an element of responsibility to a family, particularly for children. For couples who cannot, or choose not to, have children, pets can be a replacement and be loved as dearly as children. Pets, such as dogs and cats, are cared for as additional family members by many people and are mourned as such as well when they pass away.