I prefer to eat plain bread with my soup.

I bought some plain breads from the bakery.

The plain-winged antshrike is a small bird found in South America.

The plain-winged antshrikes are small birds found in the rainforest.

The answer to the puzzle was hidden in plain sight.

She tried to hide in plain sight by wearing a disguise.

They are just plain folks.

The package arrived in a plain brown wrapper.

The Northeast China Plain is one of the largest plains in China.

Plain old data is a term used in computer programming to refer to data that does not have any additional functionality or behavior.