住院

Pinyin: zhù yuàn
Meaning：To be in hospital
Sentence: 她已住院去切除阑尾。She's gone into hospital to have her appendix taken out.

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住：

Pinyin: zhù
Meaning: To live; to reside
Radical: 亻
Stokes: 7
Traditional: 住
Common words/Phrase:
住宿 [zhù sù] 【lodging】
住宅 [zhù zhái] 【tenement】
住房 [zhù fáng] 【housing】
住所 [zhù suǒ] 【habitation】
住址 [zhù zhǐ] 【dwelling place】

院：

Pinyin: yuàn
Meaning: Courtyard; institution
Radical: 阝
Stokes: 9
Traditional: 院
Common words/Phrase:
院士 [yuàn shì] 【academician】
院子 [yuàn zi] 【courtyard】
院落 [yuàn luò] 【compound】
院校 [yuàn xiào] 【academy】
院线 [yuàn xiàn] 【cinemas】