What context can I use each word in?
Learn when and how to use these words with these examples!
planum
Example
The planum is a vast, flat region on the surface of Mars. [planum: noun]
Example
The concrete floor was planum and free of any bumps or cracks. [planum: adjective]
plain
Example
The Great Plains of North America are known for their vast grasslands. [plain: noun]
Example
Let me explain it to you in plain terms so that you can understand. [plain: adjective]
Example
The author's writing style is plain and unembellished, making it easy to read. [plain: adjective]
Good things to know
Which word is more common?
Plain is a more common word than planum in everyday language, and it has a wider range of uses.
Whatโs the difference in the tone of formality between planum and plain?
Planum is a more formal word than plain, and it is typically used in technical or scientific contexts.
