Can you distinguish between immigration, green card, permanent residence and passport?

Immigration: in a broad sense, it refers to moving from the original place of residence to another place to live and settle down. Immigration mentioned in the Immigration Law refers to moving from the original country of residence to the destination country and obtaining the permanent residence or nationality of the destination country (in most immigrant countries, immigration refers to obtaining the permanent residence, and other naturalization conditions must be met if you want to be naturalized, but some countries can be naturalized directly).

Green card: the early "permanent resident card" in the United States was called "green card" because of its green tone. Later, people called the "permanent resident card" issued by various countries.

Permanent residence: short for permanent resident or permanent residency. Obtaining permanent residency in a country means that you can live, work, go to school, enjoy local social welfare and so on for a long time in this country, and of course you have to pay taxes locally like a citizen of this country. Obtaining permanent residency will not change the original nationality. For example, China immigrated to the United States, obtained permanent residency in the United States and got a green card in the United States, but he is still a China company and holds a China passport.

Passport: Passport is a travel document issued by the state to citizens. China people who emigrate abroad are still China citizens and hold China passports as long as they have not acquired foreign nationality (only permanent residence status in foreign countries). A China citizen who has joined a foreign nationality can obtain a foreign passport, but according to the provisions of the Nationality Law of China, his China nationality will be automatically lost, so he can no longer hold a China passport.