1.
etiquette: manners and social rules
- Etiquette can change depending on what country you are in.
- What etiquette should I know before I travel there?
2.
proper etiquette: following the manners and social rules of a particular place
- I don't know proper etiquette when dining in China, so I just watch other people and do what they are doing.
- Proper etiquette is important when doing business abroad.
3.
to give tips: to give pieces of advice
- She gave me tips on how to be a better manager.
- My boss gave some tips about how to sell.