Wootz steel sword = Damascus sword

  Nihonto is a general term for Japanese swords. Katana falls under that category.

  There is no wikipedia page for modao, but there is an extremely similar changdao. It’s said that both weapons are the same, except that changdao is single-edged while modao is double-edged. (Meaning, there isn’t a blunt side to the blade)

  The modao is an extremely long two-handed sword, similar to the katana. If you know what’s kendo, it is pretty alike to the sword they use in there.