Naniwa Traditional 2000 grit question

[coreywd886]

Hello everybody. New to the forms here. I've actually been creeping for a bit, just soaking up the avaliable information posted. I do have a question though about the Naniwa standard , 2000 grit green stone vs the Naniwa green brick of joy 2000 grit. Are they the same? What is the difference? Thank you in advance.