wineglass vs drinking glass

wineglass and drinking glass both are nouns.

Word	Noun	Adjective	Verb	Adverb
wineglass	Yes	No	No	No
drinking glass	Yes	No	No	No

As nouns, drinking glass is a hypernym of wineglass; that is, drinking glass is a word with a broader meaning than wineglass:

wineglass: a glass that has a stem and in which wine is served
drinking glass: a container made of glass for holding liquids while drinking

Other hypernyms of wineglass include glass.

wineglass (noun)	drinking glass (noun)
a glass that has a stem and in which wine is served	a container made of glass for holding liquids while drinking