gas vs state

gas and state both are nouns.

Word	Noun	Adjective	Verb	Adverb
gas	Yes	No	Yes	No
state	Yes	No	Yes	No

As nouns, state is a hypernym of gas; that is, state is a word with a broader meaning than gas:

gas: the state of matter distinguished from the solid and liquid states by: relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily; and the spontaneous tendency to become distributed uniformly throughout any container
state: (chemistry) the three traditional states of matter are solids (fixed shape and volume) and liquids (fixed volume and shaped by the container) and gases (filling the container)

Other hypernyms of gas include state of matter.

gas (noun)	state (noun)
a pedal that controls the throttle valve	the way something is with respect to its main attributes
the state of matter distinguished from the solid and liquid states by: relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily; and the spontaneous tendency to become distributed uniformly throughout any container	a politically organized body of people under a single government
a state of excessive gas in the alimentary canal	the group of people comprising the government of a sovereign state
a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely	the territory occupied by a nation
a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines	the territory occupied by one of the constituent administrative districts of a nation
a fossil fuel in the gaseous state; used for cooking and heating homes	a state of depression or agitation
	(chemistry) the three traditional states of matter are solids (fixed shape and volume) and liquids (fixed volume and shaped by the container) and gases (filling the container)

gas (verb)	state (verb)
show off	express in words
attack with gas; subject to gas fumes	put before
	indicate through a symbol, formula, etc.