1. KYC: stands for Know Your Customer, the company sometimes uses the personal data of its members which is verified through photos of personal data such as ID cards, passports, or driving licenses.

2. Airdrop: is a free gift from a new coin company to promote its project, sometimes can be obtained without cost from the company

3. Bounty: while the bounty is a gift that can be obtained after we finish doing a job that is ordered by the bounty manager