The following two sentences have much the same meaning. The usage of “lone” and “alone” depends on where it fits in the sentence. A lone cyclist rode up the hill. A cyclist rode up the hill alone. Taha is right about the meaning of “alone”, but there is some confusion between the words “lone” and “lonely”. “Lone” just means “on its own” or “unaccompanied”. We tend to use the word in particular set phrases – “lone parent” is a common one. A “lone parent” is someone who does not have a partner. The phrase does not tell us anything about their feelings. They may feel sad at being on their own, or they may not. “Lonely” (and also “lonesome”) mean that a person is sad because they are not getting the kind of human contact they want. If you are in a room full of strangers you are not “alone” but you can feel “lonely”.

alone is mainly pointing the outside world ， while lonely is mainly emphasize spiritual in one's mind

hi yaseen ..... the difference between alone and lone is that alone means he is with no-one ..but only for a while for example we say he is alone in the classroom or he is alone in the house ...while lone means that no-one loves to be with him ..no-one talks to him..no-one cares about him .so that we cant say that he is alonely person but lonely person.