manners
Polite ways of behaving that show respect to other people.
Manners are the specific ways people behave in social situations that show respect and consideration for others. Good manners include things like saying “please” and “thank you,” waiting your turn to speak, chewing with your mouth closed, and holding the door open for someone carrying packages.
Different cultures have different manners. In America, making eye contact shows you're paying attention, but in some Asian cultures, too much eye contact can seem disrespectful. In Japan, slurping your noodles shows you're enjoying your meal, while in most Western countries, that same sound would be considered rude. What counts as good manners depends on where you are and who you're with.
Manners are practical tools that help people get along. They exist because following certain behaviors makes group situations work better for everyone. When everyone at the dinner table uses basic table manners, the meal becomes more pleasant for everyone. When students raise their hands before speaking in class, the teacher can hear each person's ideas instead of everyone talking at once.
People sometimes confuse manners with deeper moral questions. Having good manners makes you pleasant to be around, but it doesn't automatically make you a good person. Someone can say “please” and “thank you” while still being selfish or dishonest. Real character goes deeper than surface politeness, though good manners and genuine kindness often go together.