Your wife's or husband's father.
Father-in-law
You dad's brother.
uncle
The person who sits next to you in school.
classmate
Your grandparents' parents.
great-grandparents.
A brother or sister who was born at the same time as you.
twin
The person who works with you.
colleague
Your dad's wife.
mother
Your dad's second wife.
step-mother
It's you mom's mom.
grandmother
Your sister's or brother's daughter.
niece
The person who lives next to you.
neighbour
Your mom's sister.
aunt
Your sister's or brother's son.
nephew
They are your uncle's or aunt's chiildren.
cousins
Any person from your family.
relative
Your wife's or husband's mother.
mother-in-law