A lot of adventure tome items have a different name in the Adventure Tome versus the Market. Sometimes it’s obvious and other times it’s not.
This is an obvious one for an example:
This is a problem though because where it’s not obvious you might not be able to find it. I once thought one of the collectibles didn’t exist in the market until my friend said it was under a different name. If they didn’t tell me I’d probably still be wondering why it didn’t exist