What are nodes? What are Masternodes?

[Hanhobi]

In simplest terms, a node is a device or data point in a larger network. A computer, a phone, or even a printer are considered nodes.

In order to carry out an operation, a blockchain relies on its nodes for their computing power. These operations and their complexity can vary. Each node is tasked with taking care of one of them. In a blockchain, all nodes are connected to each other and they constantly exchange the latest blockchain data with each other so all nodes stay up to date. They store, spread, and preserve the network data.

Some blockchains (e.g: TomoChain) feature Masternodes. Masternodes are heavier and may have additional powers compared to normal nodes. In addition to validating, saving, and broadcasting transactions, Masternodes sometimes also facilitate other events on the blockchain depending on their nature. These events include governing voting events, providing execution of protocol operations, and enforcing the laws of the according to the blockchain.

Masternodes are generally always online (24/7), and facilitate much more memory than normal nodes. You could say a Masternode is like hosting a very large server on the network. Because hosting a Masternode usually requires much more resources (electricity, up-time, maintenance, storage space, memory), hosting one generally provides payment in the form of interest.

Who can run a Masternode? https://pantograph.io/what-are-nodes/