What context can I use each word in?
Learn when and how to use these words with these examples!
planar
Example
The planar surface of the table made it easy to draw on. [planar: adjective]
Example
The triangle is a planar figure since it lies entirely in one plane. [planar: adjective]
flat
Example
The flat tire needed to be replaced. [flat: adjective]
Example
The paper was so thin that it felt almost flat. [flat: adjective]
Good things to know
Which word is more common?
Flat is more commonly used than planar in everyday language. Flat is versatile and covers a wide range of contexts, while planar is less common and is typically used in technical or scientific contexts.
Whatโs the difference in the tone of formality between planar and flat?
Planar is generally considered more formal than flat, due to its technical and scientific associations.
