pentarchy
five
【医】 pent-; Quinq
beginning or end; cobbra; conk; crumpet; end; first; garret; hair; head
leading; nob; noddle; pate; sconce; side; top; twopenny
【医】 capita; caput; cephal-; cephalo-; head; kephal-; kephalo-
rule; govern; dominion; overrule; predominate; reign; rein; sway
【经】 ruling