Survival

noun

1. The fact or act of surviving; continued existence or life.

   "His survival in the open ocean was a miracle; he had fully expected to die."

2. (as a modifier) Of, relating to or aiding survival.

   "His survival kit had all the things he needed in the wilderness."

3. The avoidance of relegation or demotion to a lower league or division.
4. A custom or belief that persists in folklore from earlier times, when the rationale behind it is forgotten.