hermaphrodit is a synonym of Bisexual
differenceis that hermaphrodite is an individual or organism possessing gender-ambiguous sexual organs, typically including both types of gonads while bisexual is a person who is bisexual someone who is attracted to both males and females. And hermaphrodite is having gender-ambiguous sexual organs, typically including both types of gonads, in one individual or organism while bisexual is (sexuality|of humans or other animals) sexually attracted to members of either sex.