Yoki Wazamono (良業物)

Japanese term for a sword with the third highest rated cutting ability.

Ō Wazamono (大業物)

Japanese term for a sword with the second highest rated cutting ability.

Saijō Ō Wazamono (最上大業物)

Japanese term for a sword with the highest rated cutting ability.

Wazamono (業物)

Japanese term for a sword that is tested to cut well.

Museum quality

A supposed grade of quality, primarily uttered by people that want to sell something.