I live in Japan.

Polygyny is a social system where one man marries multiple women.

Monogamy is a system where one man marries only one woman.

The United States has adopted a bicameral system.

He is conducting activities against the institution of conscription.

Funerary practices in Japan vary by region and religion.

The burial practice in Japan is an important culture that symbolizes family ties.

This antiperspirant has the effect of suppressing sweat.

In psychology, it is important to understand the mechanism behind human behavior.

We adopted the AA system to start a new project.