Interesting description of. Node here.... preaching to the quire on Nostr 😜
"WHAT IS A BITCOIN NODE?
A Bitcoin node is a computer running Bitcoin software that communicates in the Bitcoin peer-to-peer network. It can readily validate a new transaction from its peers. It can also sign (to prove ownership of coins) and broadcast a new transaction (which spends its own coins) across the network for validation among the peers. The primary function of transaction validation is to prevent double-spending, i.e. to ensure that the outputs (coins) in the transaction have not been spent by any of the previous transactions."