The parent is correct, but to throw another shoe in the gears, there are other situations in which a proton is referred to as a hydrogen ion. For example, durin

The parent is correct, but to throw another shoe in the gears, there are other situations in which a proton is referred to as a hydrogen ion. For example, during reionization in cosmology, hydrogen becomes ionized. The H+ ion is then referred to as hydrogen. Sometimes in chemistry when dealing with acids, H+ is referred to as hydrogen and not a proton, but I've also heard it the other way. I think a good guess, is that if you're dealing with nuclear physics, call it a proton, anything else call it whatever you want.