# General Concepts * **Card**: a real-world physical collectible card (such as a player card or TCG card), the physical asset behind the rights traded on the platform. * **Card Collection**: a group of cards packaged and issued together in the same MintBox. * **Tokenized Interest**: a blockchain token (ERC-20) representing a share of rights in a specific card-backed market, mapping a physical card on-chain through tokenization. Holding it does not necessarily mean you actually possess or own the physical card. Specific rights follow the listing rules and legal documents (see "Tokenized Interest" under "How Market.Cards Works" and "Tokenized Interest is not physical possession" under "Risks & Disclosures"). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.market.cards/glossary/general-concepts.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.