Quick definitions from WordNet (simplicity)
▸ noun: the quality of being simple or uncompounded ("The simplicity of a crystal")
▸ noun: absence of affectation or pretense
▸ noun: a lack of penetration or subtlety ("They took advantage of her simplicity")
▸ noun: lack of ornamentation
▸ noun: freedom from difficulty or hardship or effort
▸ Also see simplicity
▸ noun: the quality of being simple or uncompounded ("The simplicity of a crystal")
▸ noun: absence of affectation or pretense
▸ noun: a lack of penetration or subtlety ("They took advantage of her simplicity")
▸ noun: lack of ornamentation
▸ noun: freedom from difficulty or hardship or effort
▸ Also see simplicity