plane
(airplane)
- I decided to travel by plane.
- We’ll be boarding the plane in about fifteen minutes.
(a tool with a blade, used to smooth a wooden surface by shaving very thin layers off it)
- I have to plane the edge of the door with a plane so it would close easily.
plain
(obvious, clear to understand)
- It was quite plain that something was wrong. It’s plain to everyone that he doesn’t agree.
(without a pattern or decoration)
- She had on a plain black dress. We sat at a plain wooden table.