It seems he thinks I'm a nuisance to him.

This kanji is hard to read.

Recently, trade friction between America and China has been intensifying.

Every morning, I tighten my body by doing dry rubbing.

The angle of friction of this material is 30 degrees.

The reason why water droplets become round is due to surface tension.

His true feelings came to light.

His true character came to light.

He seems calm on the surface, but he is very upset inside.

He had a face full of anger.