Your first cousin's father's brother could be yourfather. He could also be your uncle. Or, if your first cousin is related to you through your mother, he could be unrelated to you in any way.
They are cousins.
jew face
second-cousin
Great Uncle.
None. There is no relationship between the two of you.
None. There is no relation through "my friend"
They share a common Grandparent. That makes them first cousins.
Your mother's sister's children are your 1st cousins.
You and the son of your uncle are first cousins to each other.
Your grandmother's brother is your great uncle. Your great uncle's grandchildren are your second cousins.
They are cousins: Beatrice's father was Leonato's brother.
Your grandmother's brother is your parent's uncle. The uncle's child would be your parents first cousin. You would be second cousins.