A full node is a computer or other device that maintains an accurate and complete copy of the whole blockchain in the context of blockchain networks.
Full nodes are essential to the network’s decentralization and security since they verify transactions and blocks, ensuring that all participants are abiding by the protocol’s regulations.
FUD is an acronym that stands for "Fear, Uncertainty, Doubt." Spreading false or untruthful information about a certain subject or investment is a method used to frighten away potential users or investors.
Any government-issued currency that is not backed by a tangible good like gold or silver is referred to as fiat currency. Instead, money derives its worth from the people who use it, their faith in it, the support of the government, and its status as legal cash.