Naturally Aspirated.

4-Stroke-Cycle

^ Charged Air:

^ ^ Supercharged. (Recently refers more to mechanically driven)

^ ^ ^  Turbocharged. (Exhaust driven)

^ Charged Air Cooler:

^ ^ Intercooled & Aftercooled.

^ ^ ^ w/RawWater (Seawater) Cooled Intercooler/Aftercooler (Charged Air Cooler).

^ ^ ^w/FreshWater (Engine Coolant) Cooled Intercooler/Aftercooler (Charged Air Cooler).

2-Stroke-Cycle

^ Scavenging

^ ^ Crankcase Scavenged.

^ ^ Crosshead Scavenged.

^ ^ w/Blower. (DDC)

^ PLUS Charged Air (Makes air denser)

^ ^ Charged Air Cooler