What is the difference between "marhaban" and "marhaba"?

What is the difference between "marhaban" and "marhaba"? Hello everyone I am Ahmed Mohii and last answer that question marhaban "مرحباً"= Hello : it is the official way to do greetings in English marhaba "مرحبا" Hay : is is the way to do greeting in Slang English also you can see that the only written difference is the last letter ا you can see the ً formation which gives "Marhabanمرحباً" the last N sound hope this answer your questions feel free to ask more