- agreement; concord; harmony: the concordance of the membership.
- an alphabetical index of the principal words of a book, as of the Bible, with a reference to the passage in which each occurs.
- an alphabetical index of subjects or topics.
- (in genetic studies) the degree of similarity in a pair of twins with respect to the presence or absence of a particular disease or trait.
- a state or condition of agreement or harmony
- a book that indexes the principal words in a literary work, often with the immediate context and an account of the meaning
- an index produced by computer or machine, alphabetically listing every word in a text
- an alphabetical list of subjects or topics
