What is the difference between construction and construction management?

If you understand a short language . Construction management is a recent practice in construction site for timely completion of the civil engineering projects

the act of constructing something; "during the construction we had to take a detour"; "his hobby was the building of boats"

Construction management is also thought of to be a higher level in construction. You may not be the one doing all the work, but instead you command others to do the work. Construction is a more general term as in building something.