Some newbie wrote:

Before you go around flaming someone with your weird false information, you should attempt to get a clue first.

As you are new here, you obviously don't know the reputation of the
putz my comment was directed at. Therefore, I'll cut you some slack and
offer my thanks for your gratuitous lesson in geography : )

I've lived in both Cape Cod and Martha's Vineyard for many years. Martha's Vineyard is NOT considered part of Cape Cod by anyone with any knowledge of the area.

Oddly enough most folks I know consider them one and the same. To those
of us that don't live on Cape Cod, it's just semantics.