Nounce or Salt?
Nonces and salts are similar and serve related purposes, but aren't identical.
Nonces and salts are typically randomly generated, not secret, and serve to prevent attacks that would otherwise be possible against the system.
Nonces and salts differ mainly in the context in which they're used, and in the consequences of repeats - a duplicate salt is unimportant, but a duplicate nonce can lead Unfortunate events
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