These 44 letters are divided into two categories:
* Vowels (स्वर): 10 vowels
* Consonants (व्यंजन): 34 consonants
However, it's important to note that these 44 letters are not all unique. Some letters are considered to be variations or combinations of other letters. For example, "ch" and "jh" are considered to be variations of the basic consonant "k".
Therefore, while there are 44 letters in the Hindi alphabet, the actual number of unique sounds that these letters represent is less than 44.