夫妻关系:Spouse(夫&妻):husband, wife。
直系血缘关系:
father, mother(父&母);
son, daughter(子&女);
brother, sister(亲兄弟/姐妹,必须是同父同母);
grandfather, grandmother(祖/外祖父&母);
grandson, granddaughter(孙/外孙子&女);
great-grandfather, great-grandmother(曾祖/外祖父&母);
great-grandson, great-granddaughter(曾孙/外孙子&女)。
亲缘关系:
uncle(伯伯、叔叔、舅舅、姑父、姨父等);
aunt(姑姑、姨妈、婶婶、舅妈等);
nephew(侄子、外甥等);
niece(侄女、外甥女等);
cousin(堂/表兄弟姐妹,也就是uncle或aunt的孩子,不是亲的)。