glasswork vs crystal

glasswork and crystal both are nouns.

Word	Noun	Adjective	Verb	Adverb
glasswork	Yes	No	No	No
crystal	Yes	No	No	No

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

Other hyponyms of glasswork include cut glass, glass, Venetian glass, laboratory glassware.

glasswork (noun)	crystal (noun)
an article of tableware made of glass	a protective cover that protects the face of a watch
	glassware made of quartz
	a crystalline element used as a component in various electronic devices
	a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces
	a solid formed by the solidification of a chemical and having a highly regular atomic structure
	colorless glass made of almost pure silica