對得起來：一致
這一族最貼近字根本身。把兩樣東西並排比對，結果吻合，那個吻合就是 concordance。差別只在比對的是什麼：說法、基因，還是醫囑。
noun · C2
The state of two or more things being the same as each other, or agreeing with each other.
一致
核心畫面
One way to hold this word: two things laid side by side, and they match. Two reports say the same thing. Two twins carry the same trait. A patient and a doctor land on the same plan. And a word-list is the same picture, just done thousands of times over: every place one word appears is pulled out and lined up so the uses sit together and can be compared.
concordance 可以想成「把兩樣東西擺在一起，結果對得上」。兩份報告說法相同，就是對得上。一對雙胞胎都有同一…更多收起
concordance 可以想成「把兩樣東西擺在一起，結果對得上」。兩份報告說法相同，就是對得上。一對雙胞胎都有同一個特徵，也是對得上。病人和醫師談出同一個做法，還是對得上。語詞索引其實是同一個畫面，只是重複做上千次：把一個字散在書裡的每一處抓出來，一行一行對齊排好，讓它們彼此照得到面。From the word’s history
The packet's etymology tree traces the word through Old French concordance and Late Latin concordantia to Latin concors, built from con- (together) and cor (heart) — 'of one heart'. That root sits right under the modern core: things that agree, and lists that bring matching uses together.
封包裡的字源樹把這個字往回追到古法文 concordance、晚期拉丁文 concordantia，再到拉丁文 concors——由 con-（一起）加 cor（心）組成，字面是「同一顆心」。這條線索正好對上它今天的核心：兩邊對得起來；而一本索引做的，就是把同一個字的各處用法對齊在一起。
Wiktionary etymology tree supplied in this packet (source_ref kaikki:3f6f69a190036ae4:689768282): PIE *ḱóm > Latin cum / com-, PIE *ḱḗr > Latin cor; Latin concors > Late Latin concordantia > Old French concordance > English concordance.
Two branches
把同一個字的每一處對齊排好：索引
這一族不是另一個意思，是同一個畫面放大。不是兩樣東西對一次，而是同一個字的上千次出現全部拉出來對齊，讓它們彼此照面。
noun · C1
A book or list that shows every word used in one book, or in the books of one writer, arranged in alphabetical order, with the place where each word appears and usually something about how it is used.
語詞索引