fickleness vs falseness

fickleness and falseness both are nouns.

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

As nouns, fickleness and falseness are synonyms defined as:

fickleness and falseness: unfaithfulness by virtue of being unreliable or treacherous

Other synonyms of fickleness include faithlessness, inconstancy.

fickleness (noun)	falseness (noun)
unfaithfulness by virtue of being unreliable or treacherous	the quality of not being open or truthful; deceitful or hypocritical
	unfaithfulness by virtue of being unreliable or treacherous
	the state of being false or untrue