Plebeian & Proletarian

Plebeian means common or ordinary individual or behavior: “The daughter of the knight has refused to marry the soldier as he is a plebeian belonging to lower class of society.”

Proletarian means a person who has low social status; such as, a member of the working class: “Abraham Lincoln rose from a proletarian to the President of America and this is rightly called a journey from log house to the White House.”