建: Ⅰ动词1.(建筑) build; construct; erect 短语和例子建电站 build a power station; 新建的工厂 newly-built factory; 重建家园 rebuild one's homeland; 大楼边上又扩建了一些教室。 extra classrooms were built out from the main block.
房: Ⅰ名词1.(房子) house 短语和例子瓦房 tile-roofed house; 楼房 a building of two or more storeys; 平房 single-storey house; a house of one storey; 草房 thatched cottage; 洗澡房 bathhouse2.(房间) room 短语和例子客房 guest