He ate something by mistake and had an allergic reaction.

My friend is studying Portuguese.

He sent a message to the distant ship using flag semaphore.

A statue of the head of the legendary sea turtle, called 'Aoto', stands in the center of the town.

Understanding the five cardinal relationships of Confucianism is important for deeply understanding human relationships.

In this company, leaking personal information is an absolute taboo.

I secured the shelf using a five-sun nail.

He is good at coining new words.

He coined a new slang.

Studying Sino-Korean vocabulary, or 'Hanja-eo', helps deepen understanding of Japanese.