This is the 13610th most frequent Polish word.
plaska
"Plaska" in Polish means "flat" or "level."
In this sentence, "płaski" describes the flat, even surface of the tabletop, functioning as an adjective.
Ten blat stołu jest płaski.
This tabletop is flat.
Here, "płaska" is used inquiring about the flatness of Earth's surface, also as an adjective.
Czy powierzchnia ziemi jest naprawdę płaska?
Is the surface of the Earth really flat?
In this example, "płaskie" characterizes the shape or design of the tools suitable for the project, functioning as an adjective.