In Classical Greek, there are several words translated as world: the inhabited globe is oikoumene; the Earth is Ge; everyone is pantes; the universe is kosmos. In modern Greek, the world is kosmos.
In John 3:16 the Greek translation for the word world is a part of the world as contrasted to the whole world. Strongs concordanec number 2889. Thayers Greek interpretation of the word world meaning a part of the world and not the whole world is found also in the following scriptures; John 1:29, John 6:33, John 12:47, 1 Cor 4:9, 2 Cor 5:19.