Good strangers:

They are the people you don't know but they are good to you and nice to you.
they are the one who never give you bad things or do something bad to you.
so always remember be safe and their is always a different between good strangers and bad strangers.

Bad strangers:

strangers are people you don't know but they are there to help you, such as a police officer or a doctor. However, bad strangers are people whom you don't know, who want to hurt you, do something that will make you feel uncomfortable or might take you away from your mom and dad. Bad strangers are the ones you need to stay away from.