structural:summarization, stylistic:tone
Lexicon

As an Indo-European language, Sanskrit's core lexicon is inherited from Proto-Indo-European. Over time however, the language exhibits a tendency to shed many of these inherited words and borrow others in their place from other sources.

In the oldest Vedic literature, there are few such non-Indo-European words, but these progressively grow in volume.

The following are some of the old Indo-European words that eventually fade out of use in Sanskrit: