dream vs imagination

dream and imagination both are nouns.

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

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

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

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

dream: imaginative thoughts indulged in while awake
imagination: the formation of a mental image of something that is not perceived as real and is not present to the senses

Other hypernyms of dream include imaginativeness, vision.

dream (noun)	imagination (noun)
a series of mental images and emotions occurring during sleep	the formation of a mental image of something that is not perceived as real and is not present to the senses
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)	the ability to deal resourcefully with unusual problems
a state of mind characterized by abstraction and release from reality
a cherished desire
someone or something wonderful

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