The term "green card" is commonly used to refer to the United States Permanent Resident Card, which grants individuals the right to live and work in the US permanently. However, there are several synonyms for this term, including immigrant visa, permanent visa, and lawful permanent residency. These terms all refer to the same legal status and are often used interchangeably. Additionally, the green card can also be referred to as an alien registration card or a permanent resident alien card. Regardless of the terminology used, obtaining a green card is a crucial step for many individuals seeking to make the US their permanent home.