Is There a Difference Between Hierarchy and Emphasis?

It's very rare that i see, speaking of e responsive design, that you actually have full text on buttons. Often you can see peopleer, some versions, going to icon only on smaller interfaces, and then adding the text on bigger interfaces. That's the more common yhou also got the the them idea when you you have a slightly more explanatory text under the button. I've seen that too. Like edo thatd moved to bin, or moved ta trash thing underneath it might say, don't worry, you can uno this latter. Oh, exactly right. And hierarchy is the next topical area, which sort of maxe us into and overlaps with the next one