A notable difference between a feeling of Déjà vu and a Dream is that the former takes place while a person’s in a conscious state of mind, whereas the latter mostly happens when a person’s sleeping or in an...

A dream can be defined as a series of images, events and sensations occurring during sleep. Reality is the existential state of things without any sort of imagination or interpretation involved.

A dream means the successive images, events and sensations that a person experiences in his/her sleep. A nightmare too is a dream, albeit an unpleasant or frightening one at that.

Dreams can be defined as a series of successive visions, images and feelings experienced by a person during his/her sleep. Fantasy is imagining improbable things, which have no basis in reality.