What are the differences between Pasmo and Suica cards in terms of usability and benefits for transportation in Japan?

Pasmo and Suica cards are both rechargeable smart cards used for transportation in Japan. The main difference lies in their issuing companies - Pasmo is issued by the private railway companies, while Suica is issued by JR East. In terms of usability, both cards can be used interchangeably on most trains, buses, and subways in Japan. However, Suica has a wider coverage and can also be used for shopping and other services. Additionally, Suica offers more benefits such as discounts and reward points compared to Pasmo.