# knowledge

- [What is Cryptocurrency?](/knowledge/what-is-cryptocurrency.md)
- [What is a marketplace?](/knowledge/what-is-a-marketplace.md)
- [What’s a payment gateway](/knowledge/whats-a-payment-gateway.md)
- [What is staking?](/knowledge/what-is-staking.md)
- [What are NFTs?](/knowledge/what-are-nfts.md)