A more thorough explanation:

Definition: To end life or cause physical death. The word can also be used figuratively to mean putting an end to something.

• The hunter killed a deer in the forest.
• The soldier was killed in action during the war.
• The doctor tried to save the patient's life, but the disease ultimately killed them.
• The company decided to kill the project due to lack of funding.

The examples illustrate the different ways the word "kill" can be used. The first three examples show the literal meaning of ending a life, while the fourth example shows the figurative meaning of putting an end to something. In all cases, the word "kill" implies a finality and irreversible action.