​Bisexual Vs Pansexual? What's The Difference?
https://www.minus18.org.au/index.php/resources/sexuality-info/item/647-bisexual-vs-pansexual
Is there anything wrong with using one over the other?
No! Not at all!!
Just remember that you preferring one term doesn’t make the other one bad, and don’t assume that everyone who uses that term means it in a bad way. Not everyone who is bisexual is clueless about non-binary things, and not everyone who is pansexual believes in being “gender blind”. If you're defining your identity as how it's better than someone else's, you can really hurt people. They're both legitimate identities, and there's plenty of good reasons to use either term for yourself.
 
Bi (In)visibility: A REFLECTION ON IDENTITIES OUTSIDE THE BINARY
https://www.wakemag.org/exclusives-1/2018/11/5/bi-invisibility
Sexuality truly is fluid, and some people may identify as bisexual, then gay, or any number of other labels along their personal journey, bisexuality is still a legitimate sexuality that many people identify as throughout their lives.
 
All Bi Myself: the Strange Invisibility of Bisexuality
​https://thespinoff.co.nz/society/10-03-2019/all-bi-myself-the-strange-invisibility-of-bisexuality/?fbclid=IwAR1R70Su5QLmFaSvN7EmEi9AhabnLgYnVDqzQBengjmztNZdXsqLg7w0nFc
How do you make bisexuality and pansexuality more visible in our society? 
There are at least as many bi and pansexual people in the world as lesbians and gay men combined, at least according to surveys of western countries. But bisexuality is poorly understood – leaving bi and pansexual people feeling that their sexuality is invisible or invalid.
 
Why Is “Bisexual” Such A Charged Word In 2019?
https://www.dictionary.com/e/bisexual-2019/?fbclid=IwAR1-GGDt9J8WQUzQyvPJ-fmlbnv6dnz7tAdp5Pw0YqwLJwN0E-nSpFSBVBY
​Language is fluid and changes to reflect our growth as people and as a society. It should both serve to unify and clarify.
Words should be functional and expressive, and so in the spirit of bisexuality, let’s use language to do both.