imagination vs creativeness

imagination and creativeness both are nouns.

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

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

imagination: the formation of a mental image of something that is not perceived as real and is not present to the senses
creativeness: the ability to create

Other hypernyms of imagination include creative thinking, creativity.

imagination (noun)	creativeness (noun)
the formation of a mental image of something that is not perceived as real and is not present to the senses	the ability to create
the ability to form mental images of things or events
the ability to deal resourcefully with unusual problems