Can a map be considered a model of the Earth? How is the map different from the globe? What were the ideas about the oceans?

A map can be of different types, for example: topographic, physical, and so on, but the globe is one, that is, it has no varieties. Also on the globe, you can extensively view objects. The first ideas about the ocean were that it is endless and has no end, this was due to the fact that the depths were poorly studied, but in the era of geographical discoveries, it began to be extensively studied.