Implicating black_and_white → greyscale
Link to implication

Reason:

Technically everything that is black and white is on the greyscale

But that's not how those are tagged.
As stated in the wiki, black_and_white and greyscale are mutually exclusive.

This is black_and_white:
post #138709 post #118421 post #265216

And this is greyscale:
post #414426 post #472794 post #381940

Those two might not be the most useful tags ever, but I'm against mixing them up.

Genjar said:
But that's not how those are tagged.
As stated in the wiki, black_and_white and greyscale are mutually exclusive.

This is black_and_white:
post #138709 post #118421 post #265216

And this is greyscale:
post #414426 post #472794 post #381940

Those two might not be the most useful tags ever, but I'm against mixing them up.

Yeah you're right. There are a couple of misused tags that got me confused.

Thanks for the explanation.