Tú v. Ud. (Gerveni, Hardin, Hodge)

Here is a video of Nisa greeting her friend Keith (tú) and talking to him about her upcoming interview. Keith wishes her luck and Nisa goes in for the interview. She greets Jori by using "Usted" since it's a formal situation and they proceed with the interview.

This shows the difference between tú and Ud.