Question about my natal chart!!!!!?

I understand what you're trying to say. Yes, if you have Gemini on the second house cusp, it's the same thing as if you had Mercury in the second house, no matter what sign you have on the second. They will both act in the same manner in general. Or for example, if you had Cancer on the second house cusp, it would act the same as if you had the moon there. It's called delineation through correlation. Now see if you can follow this, Gemini on the second, or Mercury in the second is the same as having Taurus on the third house cusp, or Venus there.