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    I don't see how these two terms are related in any way, shape, or form. Can you clarify how you believe these terms are related? Commented Jun 26, 2023 at 18:59
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    What Greg says. In particular, your second definition ends with "when it is modified"; that is something which does not happen to immutable objects. Commented Jun 26, 2023 at 19:22
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    Note that the tag persistence you used on your question relates to a completely different, distinct concept than the one you are talking about. This seems to have caused some confusion. I have taken the liberty of removing the tag from your question and creating a new one persistent-data-structures Commented Jun 27, 2023 at 4:30
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    @GregBurghardt Persistent means "remains across different invocations of a program", while immutable means "remains unchanged during the same invocation of a program". Still different, but it's not unreasonable to consider these two related terms. Commented Jun 27, 2023 at 6:18
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    I can see the OP's (and my own) confusion here. "Persistence" and "Persistent Data Structures" are similar terms, but have different meanings. I can see how they are related, and I can see how someone might think they aren't related. Good question. Commented Jun 27, 2023 at 15:33