Thats what the manufacturers would lead you to believe. aftercooler is a term used for cooling after all compressing before combustion chamber, intercooler is a term for cooling between compressing stages, (example, if you had a turbo feeding a SC the cooler between the turbo and SC would be an inter-cooler, the cooler after the SC would be an after-cooler) many industrial applications have combinations of Turbos and SCs on the same engine.