dream vs dream up

dream is a noun but dream up is not a noun.

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

dream (noun)	dream up (noun)
a series of mental images and emotions occurring during sleep
imaginative thoughts indulged in while awake
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)	dream up (verb)
have a daydream; indulge in a fantasy	devise or invent
experience while sleeping