# Account Abstraction 101

- [Glossary](/timeless-x/smart-wallet/account-abstraction-101/glossary.md)
- [What is an account?](/timeless-x/smart-wallet/account-abstraction-101/what-is-an-account.md)
- [What is Externally Owned Account (EOA)?](/timeless-x/smart-wallet/account-abstraction-101/what-is-externally-owned-account-eoa.md)
- [What is Smart Contract Account (SCA)?](/timeless-x/smart-wallet/account-abstraction-101/what-is-smart-contract-account-sca.md)
- [What is UserOperation?](/timeless-x/smart-wallet/account-abstraction-101/what-is-useroperation.md)
- [What is Bundler?](/timeless-x/smart-wallet/account-abstraction-101/what-is-bundler.md)
- [What is EntryPoint?](/timeless-x/smart-wallet/account-abstraction-101/what-is-entrypoint.md)
- [What is Aggregator?](/timeless-x/smart-wallet/account-abstraction-101/what-is-aggregator.md)
- [What is Paymaster?](/timeless-x/smart-wallet/account-abstraction-101/what-is-paymaster.md)
- [What is ERC-4337?](/timeless-x/smart-wallet/account-abstraction-101/what-is-erc-4337.md)
- [What is EIP-1271?](/timeless-x/smart-wallet/account-abstraction-101/what-is-eip-1271.md)
- [What is ERC-6900?](/timeless-x/smart-wallet/account-abstraction-101/what-is-erc-6900.md)