Dizziness is the state of being dizzy. When a person is said to be dizzy, it's as if the person is spinning around or losing balance. It is possible for a person to experience tinnitus and vertigo when dizzy. Vertigo is the sense or feeling of whirling and loss of balance, while tinnitus is the perception of noise in the ear.
Such as ringing in the ear. On the other hand, drowsiness is a state of being or feeling abnormally sleepy or tired. The word "drowsy" comes from an old English word which means "falling." Drowsiness often occurs when the brain is tired or worn out.