dual

the status of being a citizen of two countries at the same time

the status of being a national of two countries; same as dual citizenship

a road with two separate roadways for traffic travelling in opposite directions, especially in British English

designed or suitable for two different uses

performing two different functions or jobs

having two different or opposing aspects or characteristics

serving two different purposes or having two roles

the state of having two distinct social or cultural identities

a plan of action involving two different approaches to achieve a goal

a condition where a person seems to have two different characters

a state of allegiance to two different groups, countries, or causes

a sports competition between two teams, especially in American English