glasswork vs cut glass

glasswork and cut glass both are nouns.

Word	Noun	Adjective	Verb	Adverb
glasswork	Yes	No	No	No
cut glass	Yes	No	No	No

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

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

glasswork (noun)	cut glass (noun)
an article of tableware made of glass	glass decorated by cutting or grinding facets