Perseverance (noun)
Continuing in a course of action without regard to discouragement, opposition or previous failure.
Persistence (noun)
The property of being persistent.
“You’ve got to admire his persistence. He’s asked her out every day for a month even though she keeps turning him down.”
Persistence (noun)
Of data, continuing to exist after the execution of the program.
“Once written to a disk file, the data has persistence: it will still be there tomorrow when we run the next program.”
Persistence (noun)
Continuation of the previous day’s weather (particularly temperature and precipitation statistics).
Wiktionary