He claims to be a warrior for freedom of expression, but in reality, he's just someone who uses derogatory words.

In set theory, the symmetric difference indicates the difference between two sets.

She has trypophobia, and feels discomfort when she sees things with many holes like beehives or corals.

An electrooculogram is a test method to record the movement of the eyeball.

I examined muscle activity using an electromyogram.

He solved the problem in a scientific way.

This reaction occurs through a chemical process.

He is good at tactical thinking.

He exercises every day and leads a healthy life.

Fundamental knowledge of mathematics is necessary to solve advanced problems.