The rainbow formed a beautiful arc in the sky.

The American Red Cross, also known as ARC, provides emergency assistance, disaster relief, and disaster preparedness education in the United States.

Joan of Arc was a French heroine who played a key role in the Hundred Years' War.

The arc lamp illuminated the room with a bright light.

The architecture of the building is stunning.

Archaeology is the study of human history through the excavation and analysis of artifacts and other physical remains.

My brother is studying to become an architect.

The architectural design of the building is both functional and aesthetically pleasing.

I spent hours playing games at the arcade.

In his dreams, he often visited Arcadia, a utopia nestled in the mountains of ancient Greece.