Pretty simple:
Bi: Attracted to more than one gender.
Pan: Gender is not a factor in attraction (aka nominally attracted to all people of all genders).
So as an example, you can be bi but have a preference towards men or women, that would be not be congruent with being pan.
Pretty simple:
Bi: Attracted to more than one gender.
Pan: Gender is not a factor in attraction (aka nominally attracted to all people of all genders).
So as an example, you can be bi but have a preference towards men or women, that would be not be congruent with being pan.