Tú vs. Ud

In Spanish, there are different ways to say the same question to people who are more superior to you than others who are not as superior. When talking to someone more superior(such as an adult), you would add Usted or Ud. to the end of a sentence, although this only applies to a few questions.

These are the only questions where the person's status effects the way your questions are phrased. Also, notice how when you are asking how someone is doing, you can say "¿Que tal?" instead of "¿Como estas?" or "¿Como esta usted?"