Is there any difference between people with HIV and people with aids?

Yes. Hiv is a virus. You have it or you don't. You can be infected with HIV and have a normally functioning immune system, either because the infection isn't active or it's controlled by medicines. If you have aids you have an immune system that's not working. You don't have aids unless you have the characteristic dysfunctional immune system, even if you are infected with the virus.