Ammonium carbonate is a compound commonly used in inorganic chemistry.

In chemistry class, I learned about the properties of ammonium chloride.

Ammonium nitrate is widely used in the manufacture of fertilizers and explosives.

There are a lot of cheap drinks at this bar.

Due to the cheap yen, exports have increased.

Ian is my best friend.

Yoshiaki is my best friend.

He decided to quit his job because it was a low salary.

He discarded a safe tile in Mahjong.

He always thinks about her.