A daze is a type of confusion, when you have a lack of clarity. When you first wake up, you might be in a bit of a daze, shuffling about the house before your brain really starts working.
Daze can also mean the feeling of distress and disbelief that you have when something bad happens to you accidentally: "After getting hit in the head by a football, you were in such a daze you couldn't remember where you were." As a verb, daze means to stun. You will definitely daze your father when you tell him that you eloped.