English words for cousins

God this made me confused.

I was just in search of

What is son/daughter of my father's brother to me?
What is son/daughter of my mother's sister to me?

which one of the above are "First cousins" and which one are " Second cousins?

Cousin: Your first cousins are the people in your family who have two of the same grandparents as you.

Second Cousin: Your second cousins are the people in your family who have the same great-grandparents as you but not the same grandparents.

Third, Fourth and Fifth Cousins: Your third cousins have the same great-great-grandparents, fourth cousins have the same great-great-great-grandparents, etc.

Removed: When the word “removed” is used to describe a relationship it indicates that the two people are from different generations.

The words “once removed” mean that there is a difference of one generation. For example, your mother’s first cousin is your first cousin, once removed. This is because your mother’s first cousin is one generation younger than your grandparents and you are two generations younger than your grandparents. This one-generation difference equals “once-removed.”

Twice removed means that there is a two-generation difference. You are two generations younger than a first cousin of your grandmother, so you and your grandmother’s first cousin are first cousins, twice removed.

In the light of these definitions the answer to my 2 questions

What is son/daughter of my father's brother to me?
What is son/daughter of my mother's sister to me?

is "First cousins"

I was misunderstanding that the cousins from father side are "First cousins" and the cousins from mothers's side are "Second cousins" which was wrong.

Did I understood it right now?(according to my 2 questions?

I would have said, even before researching it, they'd all be your first cousins.

All right.

Thanks for clarifying. Today a wrong concept of mine was corrected.

You're welcome.

To be fair, I've often wondered what all the different terms mean, but never got round to looking it up. I've got dozens of cousins and I think most of them are first cousins. Many of them have children I don't really know and I suspect they'll come into the first and second removed categories