What is TCP/IP Protocol?

TCP/IP is not a protocol its a model & documentary which provide a better rule or Hierarchy  which lead to design network.

While TCP is protocol which is used at transport layer for transport layer configuration according to priority of data transmission.

TCP/IP is the basic communication language or protocol of the Internet. It can also be used as a communications protocol in a private network

TCP/IP is a set of rules or protocols which governs the communication between the systems connected in the network