The katana is with out a doubt the primary weapon. The wakizashi was the secondary weapon.
But not necessarily. It depends on the era your talking about. If you mean prior the the 1600's during the warring states era, then the katana would be a secondary weapon. The primary being a bow, naginata, spear, or even a firearm depending on the time & the individual. Durring the Edo period, then yes the katana became more of a primary weapon, since there were virtually no more wars.
it has the sharpest blade
The uzi
you go to falconreech and go into the weopon shop and make your own weopon
Triton
The Fist
Varies by jurisdiction.
its a aztec weopon
Tools plus metal
yes
I suggest an abyssal whip
It is impossible to change the weight of anything in oblivion.
Athena was the goddess of wisdom she had no weopon but her mind and an owl she uses as asymbol.