@MonsterKaido @Hades
The attack which Kaido used in chapter 1009 - where he leaps in the air and swings his Kanobo clad with ACoC and then hits Luffy and K/O-s him - is called
"Kousanze Ragunaraku" (降三世 引奈落 -Three-world Ragnarok // viz: Conqueror of Three Worlds Ragnaraku).
The attack which Kaido used this chapter on Luffy - where he didn't leap in the air and swing his Kanobo like that - is just termed as "
Ragunaraku" (
引奈落 - Ragnarok // probably viz: Ragnaraku).
They are probably two different attacks itself with
Conqueror of Three Worlds Ragnaraku being a stronger version of
Ragnaraku. Similar to how Zoro has
Sanzen Sekai and it's stronger version
Ichidai Sanzen Daisen Sekai or
Shishi Sonson and it's stronger version
Shishishi Sonson.