What's the difference between civil engineering and quantity surveyor?

it's like asking for the difference between a car and windshield, as well as the wind shield is a small part of the car, quantity survaying is a course we took during our study. there is much much more in civil engineering than quantity survaying.

Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including works like roads, bridges, canals, dams, and buildings.

A quantity surveyor (QS) is a professional working within the construction industry concerned with construction costs and contracts