What are 2 differences between the structure of arteries and…

What are 2 differences between the structure of arteries and veins? (You need to give in the form “Arteries are/have _______ and veins are/have___________. Then give another – the second one – arteries are/have ________ and veins have/are______________. You will not get full credit if you only give one difference, aka say only one thing about arteries and one thing about veins.)