art vs glyptography

art and glyptography both are nouns.

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

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

art (noun)	glyptography (noun)
the creation of beautiful or significant things	carving or engraving (especially on stones)
the products of human creativity; works of art collectively	carvings or engravings (especially on precious stones)
a superior skill that you can learn by study and practice and observation
photographs or other visual representations in a printed publication