JWT defines a token format while OAuth deals in defining authorization protocols. JWT is simple and easy to learn from the initial stage while OAuth is complex. OAuth uses both client-side and server-side storage while JWT must use only client-side storage. JWT has limited scope and use cases.

https://www.wallarm.com/what/oauth-vs-jwt-detailed-comparison#:~:text=JWT%20token%20vs%20oauth%20token,limited%20scope%20and%20use%20cases.