Iridium is a metal that is very rare in the Earth's crust.

I always relax at the seashore on weekends.

Ruthenium is part of the platinum group and is a hard, white metal.

We will use cesium in this chemical experiment.

There is a world of difference between his cooking skills and mine.

He is a crafty merchant who can handle any difficult situation.

Radium is a radioactive chemical element.

Her hat had beautiful feathers on it.

She gave birth to a healthy boy yesterday.

We went to the bay with our family during the summer vacation.