There are four points: social habits, food culture, social etiquette and time concept.

1. Vietnamese people pay more attention to social etiquette and family values, and respect elders and traditional customs. In the United States, personal freedom and independence are more emphasized, and personal rights and privacy are more emphasized.

2. The staple food of Vietnamese people is rice and rice flour, which is relatively light. Americans prefer to eat heavy-flavored foods, such as hamburgers and French fries.

3. Vietnamese attach importance to social etiquette, modesty and respect for others, while Americans attach importance to personal freedom and expression, and express their thoughts and opinions directly.

4. Vietnamese pay more attention to the process of time, while Americans pay more attention to the efficiency and accuracy of time.