Etiquette refers to socially acceptable behaviors and standards among professionals. However, etiquette varies significantly across cultures. The document discusses etiquette in global business contexts and provides examples of cultural norms in countries like France, Brazil, India, and Japan. Key differences highlighted include appropriate greetings, gift-giving practices, dining etiquette, views on punctuality, and norms around appearance and communication styles. Understanding cultural diversity and nuances is critical for successful international business dealings.