Helicopters are more like planes than most people think.
The Soviets have long put wings on the sides of their helicopters (with crazy-steep angles) in order to get range boosts. If you're a teenage kid in the '80s you think those are weapons pylons. When you dig into it you learn that they damn near double the range.
The border between "plane with a beanie" and "helicopter with an outboard motor" is nebulous indeed.