Civil Engineering vs. Construction Management

Thread hijack as my son is interested in both these fields, as well as mech e. He’s a junior so has some time to figure things out. But what’s the best way to get a really good idea about what each profession does on a day to day basis? Are there books that help with this? Speaking to people in different fields? Shadowing? We’ve tried contacting some people but so far have been unable to find any shadowing opps.