To treat a disease would mean to give treatment to people who are suffering from a disease so you can treat a person for example. To cure means to make a disease disappear completely through treatment okay now they say that prevention is better than cure because it's better to make sure that the disease never even happens than it is to like treat it and then make it go away Like treating it and then cure it completelyOkay So let's say even if you can't prevent a disease you can treat the person who's got it and then hopefully cure that person of that disease Okay And also the noun we have the noun cure as well okay the cure for something like for example with scientists are still looking for the