art vs ceramics

art and ceramics both are nouns.

Word	Noun	Adjective	Verb	Adverb
art	Yes	No	No	No
ceramics	Yes	No	No	No

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

art (noun)	ceramics (noun)
the creation of beautiful or significant things	the art of making and decorating pottery
the products of human creativity; works of art collectively
a superior skill that you can learn by study and practice and observation
photographs or other visual representations in a printed publication