yeah i say the difference between the both of them actually Anti virus can only scans the virus that it knows. It cannot prevent any virus it does not recognize. So Anti-virus software just fights viruses, worms and trojans they have signatures for and just provides a basic protection.but internet security is used to provide defense against many threats and keep the computer secure even from hackers. is not just one program, but is usually composed more than one application that aims to provide total protection towards the user. Still at its core is certainly an anti-virus program.
Now a days, almost all antivirus gives, so need to worry about the internet security. In my opinion, antivirus are those which detect and delete virus. And online security is keeping your information safe.