1. Plain means simple, not fancy. Deirdre wanted to build a plain birdhouse, but Maya wanted one with an opening in the shape of an arch. A plain is a large piece of flat land with few trees. Tall grasses covered the plain for as far as we could see. Plain means easy to see or understand. The happy smile on Rosario's face made it plain that she was pleased to see her cousin. 2. Words that sound the same but have differnt spellings and differnt meanings are called homophones. Plain and plane are one example. You probably already know one meaning for plane; it is the short form of airplane. A plane is also a hand tool that is used to smooth the surface of a piece of wood. Marija used a plane to remove a rough spot on the shelf she was building. p.s. plane이 더 맨들맨들한가요? plain이 더 맨들맨들한가요?