Whats the difference between the look of a powder brush and a blush brush?

I bought a powder brush and a blush brush. How can I tell them apart?Whats the difference between the look of a powder brush and a blush brush?
A powder brush should typically be biggerWhats the difference between the look of a powder brush and a blush brush?
I've found that the best brush to use for blush is an angled blush brush. It goes on much smoother and blends better for me. You can always tell that one apart from the rest. You can get them for a decent price at Sally's beauty supply.