There are umbrella clouds spreading in the sky.

The 'Ginkasa', the roof of the Kōshien Stadium, protects the spectators during rainy weather.

I can't forget the day when I first shared an umbrella with him.

It started raining, so I took an umbrella from the umbrella stand.

A beautiful umbrella cloud was floating in the sky.

When the tidal range is large, the coastline changes significantly.

Fishing on the coast is difficult today because it's a neap range.

The concept of 'différance' in Derrida's philosophy indicates that the meaning of words is constantly changing.

When wealth inequality widens, the stability of the entire society is shaken.

In math class, the teacher explained the concept of relative complement.