falseness vs faithlessness

falseness and faithlessness both are nouns.

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

As nouns, falseness and faithlessness are synonyms defined as:

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

Other synonyms of falseness include fickleness, inconstancy.

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