Radium is a radioactive element.

The RA is the main branch of the military.

She won the race by a narrow margin.

Racial discrimination is a serious issue that needs to be addressed.

There are many different races in the world.

I need to buy a new rack for my kitchen.

The radar detected the approaching aircraft.

The escalating tension between the two nations has sparked fears of a new arms race.

I am going to watch a boat race this weekend.

Flat racing is a popular form of horse racing.