* Hindi language: This is the most accurate translation, emphasizing the language aspect.
* Hindi: This is often used as a general term referring to the language.
* Hindustani: This is a broader term encompassing both Hindi and Urdu, which are closely related languages.
* The Hindi language: This adds clarity by specifying "language" and emphasizes the distinction from the people who speak it.
The best option will depend on the specific context in which you're using it.