同母

どうぼ

same mother

同分母

どうぶんぼ

common denominator

同父母

どうふぼ

the same parents

姉

し あね ねえ

used after the name of someone who is an older sister figure

同分母分数

どうぶんぼぶんすう

fraction with like denominator

母子同室ケア

ぼしどーしつケア

take care of mother and baby in the same room

大姉

だいし

eldest sister

姉弟

してい きょうだい

older sister and younger brother

姉妹

しまい きょうだい

sisters

兄姉

けいし きょうだい あにあね

brother and sister

貴姉

きし きあね

your older sister

義姉

ぎし あね

sister-in-law (elder), stepsister (elder)

姉貴

あねき あね き

elder sister

諸姉

しょし

you (feminine plural), you ladies

長姉

ちょうし

eldest sister, oldest sister

姉君

あねぎみ

elder sister

令姉

れいし

your elder sister

実姉

じっし

biological elder sister, real elder sister

姉御

あねご

elder sister