This building is surrounded by firewalls.

I thought his plan was perfect, but in fact there were some flaws.

He said there's no such thing as a perfect human.

This retaining wall is designed to withstand earthquakes.

His favorite vase is placed in this niche.

The walls of this room are painted white.

He starts biting his nails as soon as he feels stressed.

I used a nail clipper to cut my nails.

He was surprised to find a claw cap.

The '爪繞' in kanji is a radical that means nail.