Hello is more of a formal greeting when speaking but not extremely formal.
Another word often used in place of this is hi or hey, these are little more laid back greetings (informal)
friend: "hello *your name* how are you? "
you: "hello *friends name* im good what about you?"
Hello is one of the simpliest words in the english diccionary, used as a greeting. Can also be shorted to hi, hey and ect.
"Hello! So nice to see you again!"
"Oh, Hello"
Hello is a slang word used for greeting it means go and have a wash you dirty sketty girl
Hello
Hope you have a good day! Nyehehehehe
Alien: "Hello!"
Elephant: "Garlic confit"
Most people dont need a hello or an act of false kindness to get them through their day, they're already good without it. Pretending to help someone for personal gain isnt kindness, its false kindness.
Most people are going to get through their day whether someone says hello or fuck you, it doesn't matter.