Stand means : stand up, I can't stand up anymore by his rudnesses, I can punch him for his rudness, , I can't stand up anymore in cold ,I'm frozen.
Withstand means, it's like foundation. This house is designed to withstand earthquake and tsunami,
I'm a man who designed to withstand all the criticism from the people regardless of what degree.
Means u have the capability ,emotionally, and ability to face everything such as trial or some certain Difficult situations whereas stand is a verb as well that u have to stand for the sake of your family ,don't give up, u have to be strong , u need to stand up for the truth, u have to fight for ur land , u need to stand in up for the people. Hope I helped u with.