IMMEDIATE FAMILY
your mother´s husband
father
your mother´s father
grandfather
your sister´s/brother´s daughter
niece
your grandmother´s mom
great-grandmother
your mother´s husband (not your father)
step-father
your father´s son
brother
your mother´s sister
aunt
your sister´s husband
brother-in-law
a person you´re going to get married with
fiancé
your father´s wife (not your mother)
step-mother
your son´s mother
wife
your father´s mother
grandmother
your sister´s/brother´s son
nephew
your husband´s/wife´s mother
mother-in-law
your father´s/mother´s son with another couple (blood connection)
half-brother
your husband´s/wife´s children
Son/Daugther
your father´s brother
uncle
your husband´s/wife´s father
father-in-law
the only son/daughter
only child
your father´s/mother´s couple´s son (no blood connection)
step-brother
your father´s wife
mother
your uncle´s/aunt´s children
cousins
your brother´s wife
sister-in-law
your father´s/mother´s couple´s daughter (no blood connection)
step-sister
your father´s/mother´s daughter with another couple (blood connection)
half-sister