Hello chauhanrasikendra;
Ethernet refers to a communications standard that covers physical layer and data layer (TCP/IP, UDP and other protocols).
Industrial ethernet (Siemens), Ethernet-IP (OVDA and Rockwell), Modbus-over-TCP (Schneider-Modicon) are proprietary data exchange formats (ISO layer 7) that use Ethernet to transport data from one controller to another.
An analogy: We can reach each other by phone (--> Ethernet, physical communication standard); But if you are speaking Hindi (Industrial Ethernet) and i am speaking French (Ethernet-IP) we can only hear each other, not communicate sensible data.
If you require more advanced technical data, please make your question more precise.
Hope this helps,
Daniel Chartier