A normal node or non-validator node can sync the latest events from the network. Users can submit their transactions into a normal node. Transactions will be propagated to the other nodes of the network.
A normal node is usually run locally, however if you want to expose blockchain data (transactions, balances, smart contract interactions). You can expose to the public via --http or --ws flag.
To enable Tracing Node, use --enabletxtracer flag.
IMPORTANT: Do not enable TX Tracer along while running Validator Node
A validator node has the ability to emit new consensus events and along with the other validators, their responsibilities are verify transactions and secure the consensus. Events are transmitted to the network through Peer-to-peer messaging service. Users can send transactions into their own validators, a normal node, or an API node, and those transactions will then be propagated throughout the network.