dream vs imaging

dream and imaging both are nouns.

Word	Noun	Adjective	Verb	Adverb
dream	Yes	No	Yes	No
imaging	Yes	No	No	No

As nouns, imaging is a hypernym of dream; that is, imaging is a word with a broader meaning than dream:

Other hypernyms of dream include imagery, imagination, mental imagery.

dream (noun)	imaging (noun)
a series of mental images and emotions occurring during sleep	(medicine) obtaining pictures of the interior of the body
imaginative thoughts indulged in while awake	the ability to form mental images of things or events
a fantastic but vain hope (from fantasies induced by the opium pipe)
a state of mind characterized by abstraction and release from reality
a cherished desire
someone or something wonderful

dream (verb)	imaging (verb)
have a daydream; indulge in a fantasy
experience while sleeping