- Koine - a Greek dialect that flourished under the Roman Empire
--1 is a kind of Greek, Hellenic, Hellenic language
- lingua franca, interlanguage, koine - a common language used by speakers of different languages; "Koine is a dialect of ancient Greek that was the lingua franca of the empire of Alexander the Great and was widely spoken throughout the eastern Mediterranean area in Roman times"
--2 is a kind of language, linguistic communication
- lingua franca, interlanguage, koine - a common language used by speakers of different languages; "Koine is a dialect of ancient Greek that was the lingua franca of the empire of Alexander the Great and was widely spoken throughout the eastern Mediterranean area in Roman times"