The word "ammonia" is a noun that means A colorless gas with a characteristic pungent smell.. In Bengali, it is expressed as "অ্যামোনিয়া, এ্যামোনিয়া, এমোনিয়া", which carries the same essential meaning. For example: "The air was filled with the smell of 'ammonia'.". Understanding "ammonia" enhances vocabulary and improves language comprehension for both English and Bengali speakers.