imaginativeness vs creativity

imaginativeness and creativity both are nouns.

Word	Noun	Adjective	Verb	Adverb
imaginativeness	Yes	No	No	No
creativity	Yes	No	No	No

As nouns, creativity is a hypernym of imaginativeness; that is, creativity is a word with a broader meaning than imaginativeness:

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

Other hypernyms of imaginativeness include creative thinking, creativeness.

imaginativeness (noun)	creativity (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