Tera is a decentralized application platform. This is akin to an operating system. Tera consists of a repository of programs and data storage integrated into the Internet. The mechanism for publishing programs and data on this platform is free from censorship. The circulatory system is the blockchain.
Tratin (TRAT) is a digital currency. It uses peer-to-peer technology to operate with no central authority or banks; managing transactions are carried out collectively by the network. There is no central control over the token. Tratin is open source, community driven, decentralized.