If your saying that whitespot = ick then the answer is...if the fish was QT
properly and there is no exposure of ick to the tank, then no the fish can not catch ick. Ick is a parasite. If the fish is introduced to the tank and doesnt have ick, then there is no way for the ish or the tank to just get ick....However if the fish was not QT
for the length of time needed and or treated, then yes the outbreak of ick can occur. And no-if you leave ick to run its course, most if not all off the fish will succomb to it.
I dont know any other terms used to describe ick, but I have heard whitespot and as far as I know these are the same.HTH