I don't think that anyone could explain that differences "briefly". For some general information about the concept of family you might have a look at this:
http://openlibrary.org/b/OL7132733M/ways_of_the_gods
At least the first chapter ("The Gods of the House") would be worth reading. It gives some insight into the concept of the institution "family" in ancient times and how it may have been developed. Also the term "property" and it's use in the named context is discussed.