The word "challenge" is a noun that means A difficulty in a job or undertaking that is stimulating to one engaged in it.. In Bengali, it is expressed as "চ্যালেঞ্জ, প্রতিদ্বন্দ্বিতা, চ্যালেঞ্জ করা", which carries the same essential meaning. For example: "Learning a new language is a big challenge.". Understanding "challenge" enhances vocabulary and improves language comprehension for both English and Bengali speakers.