Hello and Hi

Hello noun - An expression of greeting.

Hi is a synonym for hello in exclamation topic. In some cases you can use "Hi" instead the word "Hello" as a noun or a interjection, when it comes to topics like how do you do. popular alternative

Hi noun - An expression of greeting.

Hello is a synonym for hi in welcome topic. You can use "Hello" instead the word "Hi" as a noun or a interjection.