What is the difference between balancing valve, globe valve, DRV and control valve. What to use where and what not to use where. Need details?

• A balancing valve is a device that controls water flow and balances heat and cooling distribution to different locations. The purpose of the valve is to enable us to supply the correct amount of heat and cooling to each part of the building.
• A globe valve, different from ball valve, is a type of valve used for regulating flow in a pipeline, consisting of a movable disk-type element and a stationary ring seat in a generally spherical body. 
• A Double regulating valves provided in chilled water branch line for balancing and achieving systems flows and its being installed in return line.
• And3 of3 are being installed in return line of each valve assembly of AHU, FAHU, FCU.

 I agree with  Basharat Ali  answer............................