Is there a difference between mana value and mana cost?

As a finance professional specializing in the intricacies of cryptocurrency, I'm curious to delve deeper into the nuances of certain terms. Specifically, I'm wondering if there's a fundamental difference between "mana value" and "mana cost" in the context of blockchain gaming or decentralized finance applications. Could you elaborate on these two concepts, highlighting their distinct meanings and potential implications? Is there a clear distinction in their usage or are they sometimes interchangeable, depending on the specific context? I'm keen to understand the intricacies behind these terms and how they might affect gameplay or financial transactions in the crypto world.