<Tr> <Th> By marriage </Th> </Tr> <Tr> <Td> <Ul> <Li> Husband </Li> <Li> Wife </Li> <Li> Open marriage </Li> </Ul> <Ul> <Li> Polyandry </Li> <Li> Polygamy </Li> <Li> Polygyny </Li> </Ul> <Ul> <Li> Mixed - orientation </Li> </Ul> </Td> </Tr> <Ul> <Li> Husband </Li> <Li> Wife </Li> <Li> Open marriage </Li> </Ul> <Ul> <Li> Polyandry </Li> <Li> Polygamy </Li> <Li> Polygyny </Li> </Ul>

Where did the term husband and wife come from