dictionary 和 thesaurus 有何異同？

dictionary 意為“詞典，字典，辭書”，例如德英詞典（German_English dictionary)

thesaurus 是“ (尤指同義詞等的)詞典;百科全書;匯編,文選”，是指(按詞義編排的）分類詞典，分類詞匯編 朗文當代高級辭典的原文解釋是“a book in which words are put into groups with other words that have similar meanings"