As a biromantic asexual woman, I refer to myself as bi or pan interchangeably.
When I looked at the definitions and using my background knowledge, it appears that both sexualities love regardless of gender.
While bisexual people like men and women, I also heard that very few of them won’t date other genders. Some bi people will only date cis men and women, others only men and women in general, and some will date nonbinary people and not care.
So anyway, don’t both sexualities love regardless of gender and find everyone attractive?
Usually, most Pansexuals don’t have gender as a factor on their attraction, many Bisexuals do. Bisexual has a more ample definition.
There are people who date multiple but not all genders for example, but there’s a lot overlap between both communities. And there’s also more plurisexualities (the + in Bi+, like polisexuality and omnisexuality) who also overlap. People sometimes use a specific one to share details about they experience their sexuality.
There’s nothing wrong with using either one or all, but we need to respect everyone’s choice about how they refer to their own sexuality.