English as a lingua franca

English as a lingua franca (ELF) is the use of the English language "as a global means of inter-community communication" and can be understood as "any use of English among speakers of different first languages for whom English is the communicative medium of choice and often the only option". ELF is "defined functionally by its use in intercultural communication rather than formally by its reference to native-speaker norms" whereas English as a second or foreign language aims at meeting native speaker norms and gives prominence to native-speaker cultural aspects.

Source: Wikipedia — English as a lingua franca (CC BY-SA 4.0)