YES. That would be your Dad or Mom's grandmother.
yes
Yes, absolutely. Your are related "by blood" to anyone descended from anyone that you are descended from, including your father and mother, their parents and their parents, and so on.
Half-fourth cousins
yes by the blood of the mccoys the taylors are the cousins to the great grandma mccoy. so yes the mccoys is related Luther Taylor
If its Aunt by full blood then you related both same 50%.
You are related "by blood" to anyone who is descended from someone you are also descended from. That includes your great grandfather and great grandmother and all their children, grandchildren and great grandchildren.
Not likely. It would make you your grandma by marriage, as you did not give birth to your father or mother.
Her great grandma.
You and your grandmother's great niece are second cousins.
The mother of one of your grandparents is your great-grandmother.The colloquial is "great-grandma" e.g. "Great-grandma Smith."
Great grandma in Punjabi is "ਗ੍ਰੈੱਟ ਗ੍ਰੈਂਡਮਾ" (Great GrandMa), pronounced as "grait grendma" in English.
You are not related to your best friend's brother-in-law's grandma's great niece, unless you are related to your best friend's brother-in-law, to his grandmother, or directly to the great neice.