<Tr> <Td> Types (show) <Table> <Tr> <Th> Genetic </Th> </Tr> <Tr> <Td> <Ul> <Li> Kinship </Li> <Li> Family </Li> <Li> Sibling </Li> <Li> Cousin </Li> </Ul> </Td> </Tr> <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> <Tr> <Th> Partner Partners </Th> </Tr> <Tr> <Td> <Table> <Tr> <Td> <Ul> <Li> Significant other </Li> <Li> Boyfriend </Li> <Li> Girlfriend </Li> <Li> Cohabitation </Li> <Li> Same - sex </Li> <Li> Life partner </Li> <Li> Friendship (romantic) </Li> </Ul> </Td> </Tr> <Tr> <Th> Sexual </Th> </Tr> <Tr> <Td> <Ul> <Li> Casual </Li> <Li> Monogamy </Li> <Li> Non-monogamy </Li> <Li> Mutual monogamy </Li> <Li> Polyamory </Li> <Li> Polyfidelity </Li> </Ul> <Ul> <Li> Cicisbeo </Li> <Li> Concubinage </Li> <Li> Courtesan </Li> <Li> Mistress </Li> </Ul> </Td> </Tr> </Table> </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Th> Genetic </Th> </Tr> <Tr> <Td> <Ul> <Li> Kinship </Li> <Li> Family </Li> <Li> Sibling </Li> <Li> Cousin </Li> </Ul> </Td> </Tr> <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> <Tr> <Th> Partner Partners </Th> </Tr> <Tr> <Td> <Table> <Tr> <Td> <Ul> <Li> Significant other </Li> <Li> Boyfriend </Li> <Li> Girlfriend </Li> <Li> Cohabitation </Li> <Li> Same - sex </Li> <Li> Life partner </Li> <Li> Friendship (romantic) </Li> </Ul> </Td> </Tr> <Tr> <Th> Sexual </Th> </Tr> <Tr> <Td> <Ul> <Li> Casual </Li> <Li> Monogamy </Li> <Li> Non-monogamy </Li> <Li> Mutual monogamy </Li> <Li> Polyamory </Li> <Li> Polyfidelity </Li> </Ul> <Ul> <Li> Cicisbeo </Li> <Li> Concubinage </Li> <Li> Courtesan </Li> <Li> Mistress </Li> </Ul> </Td> </Tr> </Table> </Td> </Tr> </Table> <Tr> <Th> Genetic </Th> </Tr> <Tr> <Td> <Ul> <Li> Kinship </Li> <Li> Family </Li> <Li> Sibling </Li> <Li> Cousin </Li> </Ul> </Td> </Tr>

Where does the term husband and wife come from