Alone and Unexampled

Alone adjective - Not being in the company of others.

Unexampled and alone are semantically related in same topic. In some cases you can use "Unexampled" instead an adjective "Alone".

Unexampled adjective - Having no equal or rival for excellence or desirability.

Alone and unexampled are semantically related in same topic. Sometimes you can use "Alone" instead an adjective "Unexampled", if it concerns topics such as superior.