家庭  jiā tíng   family / household

亲戚  qīn qi   –relative
父母  fù mǔ   –father and mother / parents
孩子  hái zi    –child

父亲  fù qīn   –father
母亲  mǔ qīn  –mother (formal)
儿子  ér zi      –son
女儿  nǚ ér    –daughter
儿媳  ér xí    –daughter-in-law
女婿 nǚ xu  –daughter’s husband; son-in-law
姐姐  jiě jie   –older sister
妹妹  mèi mèi   (informal) younger sister
兄弟  xiōng dì   brothers 
哥哥  gē ge       older brother
弟弟  dì di            younger brother

丈夫  zhàng fu     husband
老公  lǎo gong    (informal) husband
妻子  qī zi           wife
老婆  lǎo pó         (informal) wife

孙女  sūn nǚ        granddaughter
孙子  sūn zi          grandson
外甥  wài shēng   wife’s sibling’s son
外甥女  wài sheng nǚ   wife’s sibling’s daughter
岳父  yuè fù       wife’s father, father-in-law
岳母  yuè mǔ     wife’s mother, mother-in-law
外公  wài gōng   (informal)maternal grandfather
外婆  wài pó       (informal) maternal grandmother
姥姥  lǎo lǎo       (informal) maternal grandmother
爷爷  yé ye        (informal) paternal grandfather
奶奶  nǎi nai      (informal) paternal grandmother
祖父  zǔ fù        paternal grandfather
祖母  zǔ mǔ      paternal grandmother
姑妈  gū mā     aunt
继母  jì mǔ       step mother