What is a node in Bitcoin network

[christyh]

I'm new to cryptocurrency without knowledge about technical. I heard so much about node but I don't know node what it is. What's purpose of node in Bitcoin network and why we need it ? What's the different between node and Masternode ??

[mocacinno]

I'm new to cryptocurrency without knowledge about technical. I heard so much about node but I don't know node what it is. What's purpose of node in Bitcoin network and why we need it ? What's the different between node and Masternode ??

Instead of re-writing these answers, i just found 2 nice explanations for you:
to answer your first question, this was the first hit in google: http://www.coindesk.com/bitcoin-nodes-need/

As for your second question: bitcoin doesn't use the masternode concept. I think masternodes were invented by dash, here's a link: http://dashmasternode.org/what-is-a-masternode/

[gio3442]

Nodes are participants in the network. Full nodes are more important and hold a full copy of the blockchains, receiving and propagating new transactions on the go.

[christyh]

I'm new to cryptocurrency without knowledge about technical. I heard so much about node but I don't know node what it is. What's purpose of node in Bitcoin network and why we need it ? What's the different between node and Masternode ??

Instead of re-writing these answers, i just found 2 nice explanations for you:
to answer your first question, this was the first hit in google: http://www.coindesk.com/bitcoin-nodes-need/

As for your second question: bitcoin doesn't use the masternode concept. I think masternodes were invented by dash, here's a link: http://dashmasternode.org/what-is-a-masternode/

So much respect for your sharing, thanks