crystal vs glasswork

crystal and glasswork both are nouns.

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

As nouns, glasswork is a hypernym of crystal; that is, glasswork is a word with a broader meaning than crystal:

Other hypernyms of crystal include glassware.

crystal (noun)	glasswork (noun)
a protective cover that protects the face of a watch	an article of tableware made of glass
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