>>28435286They may be called game cards officially, but they are functionally identical to all other types of cartridges- plastic rectangular items containing game data, with metal contacts at the bottom or top, that are plugged, snapped, or clicked into a cartridge-based game console or handheld.
It's like Coca-Cola. Yes, it's officially "Coca-Cola", but nobody bats an eye when you call it coke or soda or pop (except because of regional dialects), because that's what it is.