A concordance is a list of the words in a text or group of texts, with information about where in the text each word occurs and how often it occurs. The sentences each word occurs in are often given.
英英词典释义
Noun
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
2. agreement of opinions
3. an index of all main words in a book along with their immediate contexts