1 相比較而言的 比較的 The relative merits of the two plans.
2 relative to something 相對的 相關聯的 the position of the sun relative to the earth
3 只用在名詞前 相比之下存在的 They now live in relative comfort(= Compared with how they lived before.)
在口語中 It's all relative though, isn't it? We never had any money when I was a kid and $500 was a fortune to us. 不過，壹切都是相對的，是不是？我小的時候，我們根本沒有錢，500塊對於我們來說就是很大的壹筆財富了。
4 relative to something 關於……的 the facts relative to the case
5 指代前面的名詞、句子或者句子的壹部分 In 'the man who came', 'who' is a relative pronoun and 'who came' is a relative clause. 在the man who came中，who是關系代詞，而who came 是關系從句。
n.
1 親戚 親屬
2 同類事物