idleness vs faineance

idleness and faineance both are nouns.

Word	Noun	Adjective	Verb	Adverb
idleness	Yes	No	No	No
faineance	Yes	No	No	No

As nouns, idleness and faineance are synonyms defined as:

idleness and faineance: the trait of being idle out of a reluctance to work

idleness (noun)	faineance (noun)
having no employment	the trait of being idle out of a reluctance to work
the trait of being idle out of a reluctance to work
the quality of lacking substance or value