It can be, rarely (a killing blow).The word killing is the present participle of the verb to kill, and may be a verb or a noun (gerund).
ahimsa
The organism that does the killing in predation is known as the predator. The organism that gets attacked is known as the prey.
chatting
Tony is a malefactor for killing his wife.
The killing of a king
king junvill ,, the king who made the word junel gwapo
A murderer; traitor; assassin; treason
what English king authorized the killing of gypsies?
Regicide is the term for killing a monarch or king. It is considered a serious crime and historically has been punished harshly.
Macduff believes that Malcolm and Donalbain, the sons of King Duncan, are responsible for killing their father.
Regicide would be the specific term for killing a king. Assassination would also be appropriate for killing of any important figure, not just a king.
Regicide is the murder of a king. Kings are political figures so that qualifies.
by killing the king
Regicide
By killing the king currently in power
He was accused of regicide (the killing of a king).