Final answer:
Billy notices the differences in appearance and behavior between himself and the townspeople of Tahlequah.
Step-by-step explanation:
Billy notices two major differences between himself and the townspeople of Tahlequah. The first difference is their appearance. Billy describes the townspeople as clean, well-dressed, and with organized hair. In contrast, Billy feels self-conscious about his dirty clothes and long, unruly hair.
The second difference is their behavior. Billy observes that the townspeople are more reserved and follow a strict social code. They speak politely, avoid eye contact, and rarely express their emotions. On the other hand, Billy is more expressive, speaks informally, and makes direct eye contact when interacting with others.