A name server is software that used to map between IP address and domain name.
Netscape
Netscape is a company and Netscape Navigator is a web browser that is developed by Netscape.
Network
An interconnection of more than one computer for sharing resources is called Network. Common types of networking are Local Area Networks (LAN), Wide Area Networks (WAN) and intranets.
Node
A computer or printer or any other device connected to network is called Node.
