Decapitation n. : The act of beheading; beheading.

Example:
Why is Decapitation such a horrifying way to die as compared to others?

Taxonomy
executions, axe, body, death, capital punishment, punishment, sword, executioner, Germany, Pakistan, history of the guillotine, Japan, noblemen, commoners, victim, abolished, government, Iraq.

Defination from the web:
Hyperlinked article describing the capital punishment, also known as beheading, where a the victim's head is removed from the body.