Survivorship is the state of being a survivor, or the fact of surviving.
Survivorship can make people think of strength, overcoming difficulties, and being the last one left.
Examples:
Her survivorship gave her the strength to keep going.
The survivorship of the little bird was amazing.
The survivorship of the old tree is a wonder.
The survivorship of the tiny plant in the storm was surprising.
The survivorship of the ancient castle is a famous story.
The survivorship of the small boat in the big storm is a great tale.