What is the difference between Local Storage and Session Storage?

Local storage doesn't expire but session storage is like a temporary created storage which gets cleared when the page session ends.

In LocalStorage, the data persists until the browser cache gets clear or your application clears the data inside local storage. While, in session-storage the data only persists until the tab of your browser application is opened or your session is valid.

Local Storage is the Permanenant Storage in a system like ROM in devices, while session storage is the storage acquired by processor for accomplishing a particular session task for the time being.