liquid vs water

liquid and water both are nouns.

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

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

liquid: fluid matter having no fixed shape but a fixed volume
water: binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent

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

liquid (noun)	water (noun)
a frictionless continuant that is not a nasal consonant (especially `l' and `r')	a facility that provides a source of water
the state in which a substance exhibits a characteristic readiness to flow with little or no tendency to disperse and relatively high incompressibility	a liquid necessary for the life of most animals and plants
fluid matter having no fixed shape but a fixed volume	the part of the earth's surface covered with water (such as a river or lake or ocean)
a substance that is liquid at room temperature and pressure	binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent
	liquid excretory product
	once thought to be one of four elements composing the universe (Empedocles), associated with the humour phlegm

liquid (adjective)	water (adjective)
existing as or having characteristics of a liquid; especially tending to flow
changed from a solid to a liquid state
clear and bright
in cash or easily convertible to cash
smooth and unconstrained in movement
smooth and flowing in quality; entirely free of harshness
filled or brimming with tears

liquid (verb)	water (verb)
	secrete or form water, as tears or saliva
	supply with water, as with channels or ditches or streams
	fill with tears
	provide with water