index
The German word for index is 'Index' (pronounced as 'in-deks'). It is used in the same context as in English, typically referring to an alphabetical list of names, subjects, etc., with references to the places in a book, document, or the like, where they are discussed. For example, you might find an index at the end of a book that lists all the topics covered and the pages where they can be found.
The index of the book is very helpful.
This sentence shows the word 'Index' in a context related to book literature, where it refers to the list at the end of a book that shows you where particular information can be found.
The price index has risen in recent months.
In this instance, 'Index' applies to economics, where a price index is a measure that examines the weighted average of prices of a basket of consumer goods and services.
The stock index has reached a new record.
In this case, 'Index' is connected with the stock market. A stock index or stock market index is a measurement of a section of the stock market, calculated from the prices of selected stocks.