you are your grandpa's .....
GRANDSON
your aunt's daughter is your mum's ....
NIECE
Your grandmother's mother
GREAT-GRANDMOTHER
two children who were born on the same day and look identical
TWINS
your mother's brother
UNCLE
your uncle's son is your mum's ...
NEPHEW
somebody who lives in the same area as you
NEIGHBOUR
your mother's brother's son
COUSIN
your mother's sister
AUNT
the man you have a romantic relationship with
BOYFRIEND
Your brother's son
NEPHEW
somebody who studies with you in one class
classmate
The woman you are married to
WIFE
Your brother's daughter
NIECE
your sons and daughters are your...
CHILDREN
Your partner's mother
MOTHER-IN-LAW
your father's daughter
SISTER
general word that includes "brothers" and "sisters"
SIBLING
your dad's father
GRANDFATHER
a person who is your family
RELATIVE
Your partner's son
STEP-SON
The man you are married to
HUSBAND
your mum's husband
FATHER
your aunt's son is your ....
COUSIN