Unaspirated, pronounced without a puff of air.Aspirated, which means they are pronounced with a puff of air.Dental (made with the tongue touching the back of your top teeth).Retroflex (made with your tongue curled back).Palatal (made with your tongue touching the roof of your mouth).Gutteral (made in the back of your throat).For example, chh is छ in Devanagari, but ছ in Bengali.
In addition, many letters don’t look similar at all. For example, the letter m in Devanagari is written as म, but in Bengali it is ম.
The trick is to look beneath the matra: Devanagari is often blockier, while Bengali is wavier. You might think those two alphabets are the same, but there are many differences, like those between the Latin and Cyrillic alphabets. It is similar to Devanagari, the script used in Hindi and Nepali, because a horizontal line called a matra (মাত্রা) connects letters together into one word. Like Thai and Hindi, it is a Brahmic script. The Bengali alphabet, also known as the Bangla alphabet and the Bengali-Assamese alphabet, is used to write Bengali, Assamese, and sometimes Sanskrit.
