relative, relation

名詞 relative:

1. a person related by blood or marriage
   同義詞：relation
2. an animal or plant that bears a relationship to another (as related by common descent or by membership in the same genus)
   同義詞：congener, congenator, congeneric

形容詞 relative:

1. not absolute or complete
2. properly related in size or degree or other measurable characteristics; usually followed by `to'
   同義詞：proportional

1. He showed such concern that people took him to be a relative.
   他很關心別人，因而大家都把他當作親人。
2. The relative items in this report will be submitted to the committee for discussion.
   把這份報告中的有關事項提交委員會討論。
3. The detective thought the stick was relative to the murder case.
   偵探認為這根木棒和謀殺案有牽連。
4. Jim took it into his head to give up his good job and go off for a holiday with a relative.
   吉姆突然心血來潮，要放棄他的好工作，與一親戚去度假。
5. The belief that moral laws are relative in meaning and application as opposed to fixed or universal.
   反律法主義認為道德準則在意義上和實踐上都是相對的，并不是固定的和普遍適用的
6. They are now living in relative comfort.
   他們現在過著比較舒適的生活。
7. The teacher asked me some questions relative to my paper.
   老師問了我一些和我的論文有關的問題。

rel.a.tive

adj.Abbr. rel.（形容詞）縮寫 rel.
Having pertinence or relevance; connected or related.
相關性的：有相關性或關聯的；連著的或有關系的
Considered in comparison with something else:
比較的：和別的事物比較著考慮的：
例句：
the relative quiet of the suburbs.
郊區(qū)的相對安靜

Dependent on or interconnected with something else; not absolute.See Synonyms at dependent
相對的：依靠于或與其他事物相互關聯的；不絕對的參見 dependent
Grammar Referring to or qualifying an antecedent, as the pronounwho in the man who was on TV or that in the dictionary that I use.
【語法】 關系的：指或者適合先行的詞的，如在句子the man who was on TV（在電視上的那個人） 中的 who 或者在 the dictionarg that I use我用的那本詞典 中的 that 那樣的先行詞的
Music Having the same key signature. Used of major and minor scales and keys:
【音樂】 記號相同的：記號相同的，用于大音階，小音階和主音：
例句：
C major is the relative major of A minor.
C大調是相對于A小調的大音階

n.（名詞）
One related by kinship, common origin, or marriage.
親屬：因親戚關系共同的起源或婚姻相關聯的人
Something having a relation or connection to something else.
關系事物：和其他事物有關系或聯系的事物
Grammar A relative pronoun.
【語法】 關系代詞

來源：
Middle English
中古英語
from Old French relatif
源自 古法語 relatif
from Late Latin rel3tovus
源自 后期拉丁語 rel3tovus
from Latin rel3tus [past participle of] referre [to relate] * see relate
源自 拉丁語 rel3tus [] referre的過去分詞 [使相互關聯] *參見 relate

【引伸】
rel.ativeness
n.（名詞）