effortlessness vs simplicity

effortlessness and simplicity both are nouns.

Word	Noun	Adjective	Verb	Adverb
effortlessness	Yes	No	No	No
simplicity	Yes	No	No	No

As nouns, simplicity is a hypernym of effortlessness; that is, simplicity is a word with a broader meaning than effortlessness:

Other hypernyms of effortlessness include ease, easiness, simpleness.

effortlessness (noun)	simplicity (noun)
the quality of requiring little effort	freedom from difficulty or hardship or effort
	lack of ornamentation
	the quality of being simple or uncompounded
	absence of affectation or pretense
	a lack of penetration or subtlety