Is it wrong to say ‘sourness is the taste’?

Sourness is the taste that detects acidity.

from Wikipedia: Taste#Sourness.

I think it’s like saying redness is the color, not red is the color. Should it be ‘sour taste’?

Solution 1:

Well, Gngram completely rules out sourness is the taste in favour of sour is the taste. And yes, you could argue that sourness is a quality related to taste.

Cambridge defines it as

the quality of having a sour taste.

But Oxford Leaner's dictionary says that it is

a taste like that of a lemon or of fruit that is not ready to eat

whereas other dictionaries send you straight to "see the definition of" sour.

I personally agree that sourness is the quality of being/tasting sour, not the taste itself, so it does look like Sour is the taste that detects acidity would be a better formulation.