How would you define visual continuity in material design?

Here black dots are not of the same size

Here shape is the same and color is different

But both have continuity.

This article will help you to understand more https://www.usertesting.com/blog/gestalt-principles#continuity

It basically means consistency all around across the entire app as having the same feel of touch when interacting with it.

Note: Even it's normally not preferred to present solely a sentence as an answer, I'll keep it enough to be able to provide enough reasoning with the question that represents bringing short description to the used term in this specific situation.