I'm my parents'...
Daughter.
Who is he?
He is my grandad / grandfather.
Who are they?
They are my cousins.
I'm my parents'...
Son.
Who is he?
He is my brother.
What are they?
They are siblings.
What are they?
They are a family.
Who is he?
He is my uncle.
Who is she?
She is my mum / mom / mother.
Who is she?
She is my sister.
Who are they?
They are my parents.
Who is she?
She is my aunt / auntie.
Who is he?
He's my dad / daddy / father.
Who is she?
She is my grandma / grandmother.