刑事【けいじ】
(police) detective, criminal matter
死刑【しけい】
death penalty, capital punishment
刑務所【けいむしょ】
prison, jail, gaol, penitentiary
刑法【けいほう】
criminal law, penal code
処刑【しょけい】
execution
死刑囚【しけいしゅう】
criminal condemned to death, convict on death row
刑罰【けいばつ】
(criminal) punishment, penalty, sentence
絞首刑【こうしゅけい】
death by hanging, execution by hanging