Kawthar
Kawthar means 'abundance' and refers to a river in Paradise granted to Prophet Muhammad (PBUH) mentioned in Surah Al-Kawthar.
Yes, it is a beautiful Quranic name symbolizing blessings and divine favor, though it remains rare.
They are transliteration variations of the same Arabic word الكوثر, with Kawthar being closer to classical pronunciation.
It appears as the title and first verse of Surah Al-Kawthar (Chapter 108), the shortest Surah.
It represents abundance, generosity, eternal blessings, and the ultimate divine gift to the Prophet.