The hardflip is unique in that it has two main variations. One is the end-over-end style that I think they're describing, where the board only does half a kickflip. The other is "flatter," and explicitly a 180 shuvit with a complete kickflip. In practice the end-over-end style is much more common, easier to perform, and nicer looking.
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Varial kickflip = 180 backside shuvit + kickflip
Hardflip = 180 frontside shuvit + kickflip
The hardflip is unique in that it has two main variations. One is the end-over-end style that I think they're describing, where the board only does half a kickflip. The other is "flatter," and explicitly a 180 shuvit with a complete kickflip. In practice the end-over-end style is much more common, easier to perform, and nicer looking.
https://www.youtube.com/watch?v=QNlKad9vzng
You can also steez fs flips like this as well, aka the Muska flip