'Kab' is the Hindi word for 'when'.
The word for crow in Sanskrit is 'kakaha' (pronounced kaakaha). If you want to write a word in Sanskrit, or learn the language, there are always books on the Net, and you can use them. First you have to learn Devanagari script, though, and learn what it sounds like before you can write a word or read it aloud, because Hindi and Sanskrit words have pronunciations that are sometimes difficult.
The Hindi word for reflection is "प्रतिबिंब" (pratibimb).
The Hindi word for ant is "चींटी" (chinti).
'Naak' is the Hindi word for nose
Hindi word for publis is "Janta"
The Hindi word for 'falcon' is, "Lagara".
Hindi word for Cheese is Paneer.
This is the Hindi word for class वर्ग.
Hindi word for close is Bandh.
Hindi word for clothe is Kapadaa
Hindi word for eating is खाना.