Question 1: When is a weapon a sword?
I think most can agree that weapons like spears, axes, naginatas, etc are not usually considered swords despite being blades weapons. Being meito or cursed shouldn’t change that
Hell we’ve even seen Kaido capable of cutting techniques with his kanabo and I think Yamato too. Doesn’t mean it’s a sword
At the same time all those weapons can be used as swords depending on the wielder
A scythe which isn’t a sword can be used as a sword as shown by zoro
Nekomamushi with his claws but obviously not all claws are swords
Legs obviously aren’t swords but Kaku still refers to them as so because of his tempest kicks. Even tho all of cp9 can also use the same technique. Similar to how all marines have trained in using swords but that doesn’t make all of them swordsmen