"There are 2 hard problems in computer science: cache invalidation, naming things, and off-by-1 errors."
At least, I have no indication that it does more than just find which items in list A also occur in list B. This text on the results page also hints at that: "All of the suggested [language_A]-[language_B] names on this page are matched solely on their written form"
The standard way to pronounce "a" in foreign words is as in "father". But this one makes me curious; Hindi is like English in that a written "a" is often pronounced reduced. (Compare the traditional spelling suttee to the "reformed" spelling sati, which more closely reflects the Devanagari spelling, or the spelling of the English word "jungle" to the Hindi word of the same pronunciation, jangal.)
So it's possible that a highly nativized pronunciation of "Pavit", if stressed on the second syllable, might be correct!
I'm English but learning Hindi, so I know to pronounce it 'puh-vit' as it were, but 'naturally' (or however many years since I started learning ago) I would read/say it like पैवित almost, you know, short English 'a'.