control of rivers, canals, entrance gates, includes admin. sense plus ~ device sense (levers, buttons)

                           ~ as in, administration (reins)  

   ~pests, lawns, etc. (spray or shielding armies(restraint sense))

LEVERS, REINS, RESTRAINING ARMIES

   ~ agency, liaison, terms of agreement;  issuances, decrees, titles, charters; 

DECREES, LIAISON, TITLE, ISSUANCES, TERMS

 ~situations, processes, projects; public image, critical information as per availability

 ~supplies, as in ordering, or supply chains (see first category, this entry)

 ~chemical mixtures or theatrical atmospheres

AGENTS, TEAMS, or SITUATIONS, CAMPAIGNS, PROJECTS, or IMAGES, INFORMATION or SECRETS

answers to the question: " the word 'control' can be used as in, 'control of' what, specifically, or 'to control' what?"