Hello mods, am here with some questions~

Are there any specific words and phrasing that is used a lot which will most likely get picked up on besides the allusions to the nine great powers?
Continued from that, is there an indication as to what kind of powers they are? Like are these powers more spiritual/theoretical in nature (mind, heart, soul etc.) or something more tangible like the elements (fire, water, air) etc.
Are there any particular themes to the stories and legends that are read up? Like do they all have to involve the sea somehow or do they use other analogies for this.
Finally, is there anything about the rifts in any of the stories? Or something 'different' that sticks out in the legends. (Or if not can I make shit up lolol.)

Any info that can be shared is as always appreciated. Ty in advance!!