water glass vs glass

water glass and glass both are nouns.

Word	Noun	Adjective	Verb	Adverb
water glass	Yes	No	No	No
glass	Yes	No	Yes	No

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

Other hypernyms of water glass include drinking glass.

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

water glass: a viscous glass consisting of sodium silicate in solution; used as a cement or as a protective coating and to preserve eggs
glass: a brittle transparent solid with irregular atomic structure

water glass (noun)	glass (noun)
a glass for drinking water	a container made of glass for holding liquids while drinking
gauge for indicating the level of water in e.g. a tank or boiler or reservoir	an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant
clock that measures time by the escape of water	a mirror; usually a ladies' dressing mirror
a viscous glass consisting of sodium silicate in solution; used as a cement or as a protective coating and to preserve eggs	a small refracting telescope
	glassware collectively
	the quantity a glass will hold
	a brittle transparent solid with irregular atomic structure

water glass (verb)	glass (verb)
	become glassy or take on a glass-like appearance
	put in a glass container
	enclose with glass
	scan (game in the forest) with binoculars
	furnish with glass