What type of suffix is "ment" in implement

"An action, process, or skill" denoted by the combining root: rearmament, tournament, management."A result, object, or agent of an action" named by the joining root: entombment, enthrallment, agreement."The means or instrument of an action": implement, medicament, reinforcement."The place of an action" named by the first root: battlement, ambushment, settlement.