Ironstone is a type of rock that contains iron minerals.

I bought some new ironware for my kitchen.

The blacksmith specializes in creating beautiful ironwork.

It's ironic that the person who always preached about healthy eating is now overweight.

The Iroquois Confederacy was a powerful alliance of Native American tribes.

The sun's rays irradiate the Earth.

The room was filled with bright light from the sun's irradiation.

His decision to quit his stable job and pursue his dream of becoming an artist seemed irrational to many.

The decision to invest all his savings in a risky venture showed his irrationality.

The swampy area is irreclaimable due to the high water table.