What Is a Green Card?
A general explanation of the U.S. Green Card concept, permanent residence terminology, and why official immigration guidance matters.
Reference category
Immigration & Residency Reference
General explanations of permits, travel authorizations and residency terminology. These pages do not assess eligibility or status.
What Is a Work Permit?
An educational explanation of work permits, how they relate to immigration status, employers, countries, and conditions.
What Is a BRP?
A careful explanation of the UK Biometric Residence Permit concept, what it has traditionally represented, and why readers should check current official rules.
What Is an eTA?
A neutral explanation of electronic travel authorizations, including how they differ from visas and why rules depend on the country.
What Is Permanent Residency?
A careful explanation of permanent residency as a general immigration concept, how it differs from citizenship, and why rules vary by country.
What Is a TRV?
A plain-language explanation of temporary resident visas, how they differ from permits and status, and why the exact meaning depends on the country.