permission is normally used when making a custom permission e.g. when making an app that other apps can tie in to, limiting access is a must.
uses-permission is used when your app actually needs a permission it doesn’t have normally.

permission is normally used when making a custom permission (e.g. when making an app that other apps can tie in to, limiting access is a must), and uses-permission is used when your app actually needs a permission it doesn’t have normally.