karthus abilitys names dont match lore

is the Deathsinger he sees death as freedom for "life is like a parasite to the soul" so why is his Q called Lay Waste? He screams "Join my Chorus" but his E is Defile. He went to the shadow isle to feel death's inbrace yet his Passive is Death Defied? his W is Wall of Pain and for the most part is makes sence cross over and see what life will do to your soul; could use some work tho. Karthus sees death as a song all should hear and yet his ablitys (R not inculded) say a defferent story. New Passive name (Death Embodied) or (Vessel of Death) Q (Lyment for the Dead) W (Wall of Pain) (no change but open to suggestions) E (Chorus of the isles) R (Requiem)(no change needed)