名詞 concordance:

1. a harmonious state of things in general and of their properties (as of colors and sounds); congruity of parts with one another and with the whole
   同義詞：harmony, concord
2. agreement of opinions
   同義詞：harmony, concord
3. an index of all main words in a book along with their immediate contexts

con.cor.dance

n.（名詞）
Agreement; concord.
協(xié)議；和諧
An alphabetical index of all the words in a text or corpus of texts, showing every contextual occurrence of a word:
字母索引：依字母順序?qū)ξ恼抡幕蜃髌啡鞯乃饕?，其中顯示每一個詞的上下文：
例句：
a concordance of Shakespeare`s works.
莎士比亞作品集索引

Genetics The presence of a given trait in both members of a pair of twins.
【遺傳學】 雙胞胎所共有的特征