Death (noun)

1. The permanent cessation of all biological functions that sustain a living organism.
2. The end of a person's life.
3. The state of being dead.
4. The cause of death.
5. The end or destruction of something.

Origin:

Old english dēað, of germanic origin; related to dutch dood and german tod.

Examples:

1. Death is inevitable for all living things.
2. He died of a heart attack.
3. Death brings an end to all suffering.
4. The death toll from the disaster was high.
5. The death of the old regime marked the beginning of a new era.