yes you can
Your mother's cousin's son who was not adopted would be your second cousin (step-cousin.)
Your cousin's child would be your first cousin once removed. So, your cousin's adopted child would be your adopted first cousin once removed?
It depends on if you share a common ancestor. If not, there is no relationship.
2nd cousin, but if it's your Dad's 2nd cousin... then your relationship with that cousin would be a 3rd cousin.
Your grandfather's cousin is your cousin twice removed. Her husband has no direct relationship to you.
He is their cousin
Yes. Also, second cousins are acceptable in the relationship department.
It is your cousin also
She has no relationship with your step-daughter. They do not share a common ancestor. If you adopt her, they would become second cousins once removed.
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There is no relationship. You do not share a common ancestor. Your mother's cousin would be your first cousin once removed.
it would be your cousin as well.