10/7/19 ALONE, LONELY, LONESOME AND LONE
Alone suggests that a person or thing is separate – there are no others around.
Lonely (and informal US lonesome) refers to unhappiness caused by being alone.
Compare:I like to be alone for short periods.But after a few days I start getting lonely/lonesome.
Alone can be emphasized by all.
After his wife died, he was all alone.
Alone is not used before a noun. Lone and solitary can be used instead; loneis rather literary.
The only green thing was a lone/solitary pine tree.