Governing
Part of speech: verb
Definition: To make and administer the public policy and affairs of; to exercise sovereign authority in.
Example sentence: I do think hubris played a role here as well, the belief that the Lusitania was too big and too fast to ever be caught by any submarine, and that, in any case, no U-boat commander would think to attack the ship because to do so would violate the long-held rules governing naval warfare against merchant shipping.
Dominant
Part of speech: noun
Definition: The fifth major tone of a musical scale (five major steps above the note in question); thus G is the dominant of C, A of D, and so on.The triad built on the dominant tone.
Part of speech: adjective
Definition: Ruling; governing; prevailing; controlling; predominant; as, the dominant party, church, spirit, power.
Example sentence: The cardinal responsibility of leadership is to identify the dominant contradiction at each point of the historical process and to work out a central line to resolve it.