topiary vs artistic creation

topiary and artistic creation both are nouns.

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

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

Other hypernyms of topiary include art, artistic production.

topiary (noun)	artistic creation (noun)
making decorative shapes by trimming shrubs or trees	the creation of beautiful or significant things
a garden having shrubs clipped or trimmed into decorative shapes especially of animals