Is "radius" a sub-category of "diameter"? [closed]

word-usage concept

I would blame that on the bad product description, since radius is half of diameter.


Is “radius” a sub-category of “diameter”?

No, they're two different things (but that share a mathematical relationship). In other words, radius is not a kind/type of diameter, which is what a sub-category would be.

Outer Diameter: 78.74mm (radius)

I would agree with @Tymek Wojnarowski and say that that is indeed a bad product description.

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