It's important to note that Vedic Sanskrit is distinct from Classical Sanskrit, which developed later. Vedic Sanskrit has some unique features not found in the later form, including:
* More complex grammar: It used more verb conjugations and noun declensions than Classical Sanskrit.
* Different vocabulary: Some words have different meanings or are entirely absent from Classical Sanskrit.
* More archaic features: It retained certain features of Proto-Indo-European, the ancestor of Indo-European languages.
While the Rig Veda is written in Sanskrit, its exact pronunciation and intonation are a matter of scholarly debate. Linguists and historians are constantly working to decipher its nuances.