Sleepy
Part of speech: adjective
Definition: Tired; feeling the need for sleep.
Part of speech: noun
Definition: The gum that builds up in the eye.
Example sentence: As a solo artist, it's so easy to be lumped into a singer / songwriter genre and writing sleepy, sad songs that are very emotionally rich that mean a lot to you, and people just get kind of tired.
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: Books are but waste paper unless we spend in action the wisdom we get from thought - asleep. When we are weary of the living, we may repair to the dead, who have nothing of peevishness, pride, or design in their conversation.