Family

Concept: Uchi (Inside) vs Soto (Outside)

Japanese uses different words depending on whose family you are talking about.
My Family (Humble): Use when talking about your family to others.
Others' (Honorific): Use for others' family, or when talking to your own elders.

Usage Examples

About Own Family
Talking to a friend about your mother
私のは東京にいます。
My mother is in Tokyo.
About Others' Family
Asking a friend about their mother
お母さんは元気ですか?
Is your mother well?
Addressing Elders
Calling your mother
お母さん、ちょっと来て。
Mom, come here a second.

Immediate Family

Grandfather
祖父
そふ
Grandmother
祖母
そぼ
Father
ちち
Casual / Also: パパ
Mother
はは
Casual / Also: ママ
Older Brother
あに
Older Sister
あね
Younger Brother
おとうと
Younger Sister
いもうと
Siblings
兄弟
きょうだい
Husband
おっと
Casual / Also: 主人 (しゅじん), 旦那 (だんな)
Wife
つま
Casual / Also: 家内 (かない), 嫁 (よめ)
Spouse
配偶者
はいぐうしゃ
Son
息子
むすこ
Daughter
むすめ
Child
子供
こども
Grandchild
まご

Extended & In-laws

Uncle
叔父/伯父
おじ
Aunt
叔母/伯母
おば
Cousin
従兄弟/従姉妹
いとこ
Nephew
おい
Niece
めい
Father-in-law
義父
ぎふ
Mother-in-law
義母
ぎぼ

Other Relationships

Boyfriend
彼氏
かれし
Girlfriend
彼女
かのじょ
Lover
恋人
こいびと
Friend
友達
ともだち
Best Friend
親友
しんゆう
Japanese Family Terms | 2hongo