<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> <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> <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> <Li> Same - sex </Li>

Where did the words husband and wife come from