General sense of "index"
* सूचकांक (soochank) - This is the most common translation and is used in a general sense for any kind of index.
Specific types of index
* सूचकांक (soochank) - Used for a table of contents, a list of topics, or a glossary in a book.
* सूचकांक (soochank) - Used for a numerical measure that indicates the level of something, like the Consumer Price Index.
* सूचकांक (soochank) - Used for an index finger, which is the first finger of the hand.
* अनुक्रम (anukram) - Used for an index of a book, referring to the table of contents.
The specific translation you need will depend on the context in which you are using the word "index".