Cliff is the amount of time that should pass before the tokens are liberated and available. Each project might setup different periods based on the project participants (public sale, private, etc.) In addition, it might also include a vesting in addition to the cliff itself.
Coinbase is an exchange for quickly trading and converting between crypto currencies. Coinbase features a nice dashboard and mobile application to keep track of your portfolio. A good feature is Coinbase Earn, which allows to learn about some crypto currencies and get some in exchange for free!
Coinlist is an exchange for quickly trading and participating in new token sales.. It’s the place selected by many projects to perform their initial token launch and sales, so it’s important to be there. It features a ‘karma’ based system that allows you to be on a priority list when those sales happen, helping you getting closer to secure a slot in the sale before it depletes.
Contract address is the direction used for indicating in a specific network information about a crypto currency, for example: Currency Network Contract BTCST Binance Smart Chain 0x78650B139471520656B9E7AA7A5E9276814A38E9 TRX Binance Smart Chain 0xf230b790E05390FC8295F4d3F60332c93BEd42e2 DAI Ethereum 0x6b175474e89094c44da98b954eedeac495271d0f A given currency might have presence on different networks, so the contract on each one of them will be different. Always pay real attention to the contract address, specially when adding it to your wallet to make sure you’re not stolen by fake contracts....
Cosmos is one of the ecosystems which is having a great growth and its usable for example via cosmostation or via keplr.