Lonely vs Alone
Lonely is when even you're surrounded by people you like, you feel like no one is there for you. You can be popular and well liked, but still be lonely.
Alone is when you are by yourself and no one is there for you. You feel a deep, dark side pit inside of you.
Lonely is when your life is happy. When your life is bright, but you feel like no one like you or is there for you.
Alone is different than lonely because you are by yourself, but not hidden from the world. You feel different and apart from them.
Lonely and Alone both drive people to insanity. To hurt themselves. To kill themselves. They are different in how they come about, but in the end, they are the same.