unreality vs falseness

unreality and falseness both are nouns.

Word	Noun	Adjective	Verb	Adverb
unreality	Yes	No	No	No
falseness	Yes	No	No	No

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

unreality: the state of being insubstantial or imaginary; not existing objectively or in fact
falseness: the state of being false or untrue

Other hyponyms of unreality include cloud, falsity.

unreality (noun)	falseness (noun)
the quality possessed by something that is unreal	the quality of not being open or truthful; deceitful or hypocritical
ineptitude in dealing with reality.	unfaithfulness by virtue of being unreliable or treacherous
the state of being insubstantial or imaginary; not existing objectively or in fact	the state of being false or untrue