easiness(the quality of being easy) noun [UK: ˈiː.zi] [US: ˈiː.zi]
facility [facilities](dexterity, skill) noun [UK: fə.ˈsɪ.lɪ.ti] [US: fə.ˈsɪ.lə.ti]Great music is that which penetrates the ear with facility and leaves the memory with difficulty. Magical music never leaves the memory. = La buena música es la que penetra en el oído con facilidad y deja el recuerdo con dificultad. Música mágica nunca sale de la memoria.