# Core Concepts

- [Architecture](/gumball-protocol/core-concepts/architecture.md): Breakdown of the various GumBall Protocol contracts
- [ERC20 Bonding Curve](/gumball-protocol/core-concepts/erc20-bonding-curve.md): Constant Function Market Maker
- [Fee Structure](/gumball-protocol/core-concepts/revenue-structure.md)
- [GumBar Staking](/gumball-protocol/core-concepts/gumbar.md)
- [GumBar Borrowing](/gumball-protocol/core-concepts/borrow.md)
- [GumBall Machine](/gumball-protocol/core-concepts/gumball-machine.md)
- [Physical Redemptions](/gumball-protocol/core-concepts/physical-redemptions.md)
- [Nomenclature](/gumball-protocol/core-concepts/nomenclature.md): Key Terms in the GumBall Protocol Ecosystem