painting vs artistic creation

painting and artistic creation both are nouns.

Word	Noun	Adjective	Verb	Adverb
painting	Yes	No	No	No
artistic creation	Yes	No	No	No

As nouns, artistic creation is a hypernym of painting; that is, artistic creation is a word with a broader meaning than painting:

Other hypernyms of painting include art, artistic production, beaux arts, fine arts.

painting (noun)	artistic creation (noun)
creating a picture with paints	the creation of beautiful or significant things
the occupation of a house painter
the act of applying paint to a surface
graphic art consisting of an artistic composition made by applying paints to a surface