What is the meaning of Greater?

comparative form of great: more great

Of two (or, rarely, more than two) things: the larger in size (bigger), in value, in importance etc.

In the names of places or geographic features:

  1. The larger geographic or administrative area that encompasses or belongs to a place (especially if both share the same name).

    The larger geographic or administrative area that encompasses or belongs to a place (especially if both share the same name).

    Including the surrounding urban areas and conurbation (of a city or other large settlement).

    Referring to a state at its fullest historical (or desired future) extent including colonies, annexed land, etc.

    Source: wiktionary.org