plain vs plane: what's the difference?
Plain means "simple" or a large flat area; a plane is an aircraft, a flat surface or a tool.
plain
/pleɪn/
Meaning: simple, or a large area of flat land
Example: “a plain white shirt”
plane
/pleɪn/
Meaning: an aircraft; a flat surface; a tool for smoothing wood
Example: “The plane landed safely.”
How to remember
A plane flies; plain is simple.