“Is there a difference between anxiety and panic disorder?”

Yes, there is a difference. You can have anxiety without panic, though likely not the latter without the former. The treatment of the two conditions also varies. It's best to consult with a psychiatrist and/or a psychologist for this. There are many helpful therapies for it.

See this link...
https://www.betterhelp.com/advice/anxiety/what-is-the-difference-between-anxiety-attack-vs-panic-attack/?utm_source=AdWords&utm_medium=Search_PPC_c&utm_term=_b&utm_content=77548444015&network=g&placement=&target=&matchtype=b&utm_campaign=6459244691&ad_type=text&adposition=&gclid=Cj0KCQiA3NX_BRDQARIsALA3fIJk0JQcu8RMy0Y_2ErbJ316SvFBEblwupJKrh4g_Vv7f3YsqR5CroYaAvc1EALw_wcB