Crucifixion is an ancient method of painful execution in which the condemned person is tied or nailed to a large wooden cross (of various shapes) and left to hang until dead. The term comes from the Latin crucifixio, fixed to a cross, from prefix cruci-, cross, + verb ficere, fix or do.
Crucifixion was in use particularly among the Persians, Seleucids, Carthaginians, and Romans from about the 6th century BC to the 4th century AD, when in the year 337 Emperor Constantine I abolished it in his empire, out of veneration for Jesus Christ, the most famous victim of crucifixion. It has sometimes been used even in modern times.
A crucifix (an image of Christ crucified on a cross) is the main religious symbol for Catholics, Eastern Orthodox and Oriental Orthodox, but most Protestant Christians prefer to use a cross without the figure (the "corpus" - Latin for "body") of Christ. The term crucifix derives from the Latin crucifixus or cruci fixus, itself the past participle passive of crucifigere or cruci figere, "crucify", "fix to a cross."