dolce far niente vs idleness

dolce far niente and idleness both are nouns.

Word	Noun	Adjective	Verb	Adverb
dolce far niente	Yes	No	No	No
idleness	Yes	No	No	No

As nouns, idleness is a hypernym of dolce far niente; that is, idleness is a word with a broader meaning than dolce far niente:

Other hypernyms of dolce far niente include idling, loafing.

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