compound: 1.substance consisting of two or more elements chemically combined 化合物(發生了化學變化)eg:Common salt is a compound of sodium and chlorine. 食鹽是鈉和氯的化合物。
2.thing make up of two or more separate things combined together. 復合物(由幾部分組成)
eg:compound nouns 復合名詞(由幾部分組成的壹個名詞)
以上解釋來自於 牛津高階英漢雙解詞典第四版。希望對妳有幫助。