glyptic art vs glyph

glyptic art and glyph both are nouns.

Word	Noun	Adjective	Verb	Adverb
glyptic art	Yes	No	No	No
glyph	Yes	No	No	No

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

glyptic art: carvings or engravings (especially on precious stones)
glyph: glyptic art in the form of a symbolic figure carved or incised in relief

Other hyponyms of glyptic art include anaglyph, glyptics, lithoglyptics, diaglyph, intaglio.

glyptic art (noun)	glyph (noun)
carvings or engravings (especially on precious stones)	glyptic art in the form of a symbolic figure carved or incised in relief