“...(10th cousins, twice removed)...”
I never did understand what this ‘removed’ thingy meant.
That is weird.
Ok, here goes.
Your mom has a sister, she is your aunt.
The aunt’s kids are your first cousins, your first cousin’s children are your first cousin once removed, their children would be your first cousin twice removed.
Your first cousins children and your children would be second cousins, so their children would be second cousins once removed.
If you have a large family it is just easier to say cousin, otherwise it just gives you a headache.
I find it interesting that in life, we have more of a monarchy than we think.
Aren’t our leaders in-bred? They know each other very well!
‘Removed’ just means how many generations separate you. For example, if your father has a first cousin, you’re first cousins once removed (i.e., one generation apart). If he in turn has a son, that’s just your second cousin (not ‘removed’) since you’re the same number of generations down from your common ancestor.
For example, your mother's first cousin is also your first cousin, but once removed because you're one generation after the relation between your mother and her cousin.
Your children will be first cousins twice removed from your mother's first cousin due to being two generations away from the relation, your grandchildren first cousins thrice removed due to three generations away from the relation, etc.