Diligent vs Prepared - What's the difference?

As adjectives the difference between diligent and prepared

is that diligent is performing with intense concentration, focus, responsible regard while prepared is willing.

(prepare).

(en adjective)

Performing with intense concentration, focus, responsible regard.

* See also

* * ----

(en adjective)

Willing.

The journalist interviewed an eye-witness who was not prepared to disclose his identity.

(head)

(prepare)