Difference between Dozy and Asleep

Dozy

Part of speech: adjective

Definition: Quite sleepy or tired. Intellectually slow.

Asleep

Part of speech: adjective

Definition: In a state of sleep; also, broadly, resting. "I was asleep when you called."Inattentive. "How could you miss that? Were you asleep?"Having a numb or prickling sensation accompanied by a degree of unresponsiveness, commonly known as pins and needles.

Example sentence: I had plenty of pimples as a kid. One day I fell asleep in the library. When I woke up, a blind man was reading my face.