A sentence with the word plain?

Answer 1

As a noun plain means flat land, the plural is plains

They looked across the plains but could see no sign of the wagons.

Plain as an adjective can mean:

unmixed, pure - I'll have a plain cracker thanks

not complicated, simple - She wore a plain blue dress. (same as Pizza above)

clearly understood, obvious - He made his intentions plain to all

Answer 2

Do you like the plates with the flowers on them or the plain white ones?

Corn and wheat are grown on the plain, potatoes and apples usually come from a more mountainous region.

I traveled by plane from New York to London and returned aboard a ship.

Answer 3

Example sentences:

The area is a plain with scattered ranches. (noun)

I like the plain style of the Amish furniture. (adjective)