culinary art vs dim sum

culinary art and dim sum both are nouns.

Word	Noun	Adjective	Verb	Adverb
culinary art	Yes	No	No	No
dim sum	Yes	No	No	No

As nouns, dim sum is a hyponym of culinary art; that is, dim sum is a word with a more specific, narrower meaning than culinary art:

culinary art: the practice or manner of preparing food or the food so prepared
dim sum: traditional Chinese cuisine; a variety of foods (including several kinds of steamed or fried dumplings) are served successively in small portions

Other hyponyms of culinary art include haute cuisine, nouvelle cuisine, rechauffe, gastronomy.

culinary art (noun)	dim sum (noun)
the practice or manner of preparing food or the food so prepared	traditional Chinese cuisine; a variety of foods (including several kinds of steamed or fried dumplings) are served successively in small portions