姉さん【ねえさん】
older sister, elder sister, young lady, miss, ma'am
姉妹【しまい】
sisters
お姉ちゃん【おねえちゃん】
older sister, lass, young lady
お姉さん【おねえさん】
older sister, elder sister, young lady, miss, ma'am, older girl
姉ちゃん【ねえちゃん】
(one's) older sister, (one's) elder sister, girl
義姉【ぎし】
sister-in-law (spouse's older sister or older brother's wife), older stepsister, older adopted sister, non-blood-related older sister
姉貴【あねき】
elder sister, older female friend
兄姉【けいし】
brother and sister
実姉【じっし】
biological older sister, real elder sister
