index
Definitions
An alphabetical list of names, subjects, or topics with references to the places where they occur, typically found at the end of a book.
A numerical scale used to compare the level, price, or value of something against a standard baseline.
A pointer or indicator, such as a finger, used to direct attention to something.
Examples
You can find the topic you are looking for by checking the index at the back of the book.
The stock market index fell sharply following the announcement of the new economic policies.
Synonyms
list register directory catalog indicator guide table of contents