Good night or good bye!
Good night is the words used to express good wishes over bedtime while Good bye is is a word used to express good wishes when parting. Oxford English Dictionary
Good night denotes that, there is the possibility that we will see the next day because the night is just a period between sun set to morning but good bye is a parting affairs know where you are going and where the other is also going and knowing that there is no possibility of meeting again, good bye now comes in.
Good night is the words used to express good wishes over bedtime while Good bye is is a word used to express good wishes when parting. Oxford English Dictionary
Good night denotes that, there is the possibility that we will see the next day because the night is just a period between sun set to morning but good bye is a parting affairs know where you are going and where the other is also going and knowing that there is no possibility of meeting again, good bye now comes in.