Using "node" to initialize scripts does not work while "nodejs" does

I followed installation instructions and successfully installed on a Ubuntu machine. But when I try to check the version with command node -v, it doesn't return anything but when I enter nodejs -v it gives out the version. Ditto with the execution of scripts, if I give node hello.js nothing happens but when I give nodejs hello.js, the file executes.

I checked online on various websites and everywhere they are using node and not nodejs. I checked with a friend who has also installed from the same location and even for her its running with node and when she tries to give nodejs it says command not found. I also didnt find any documented issue regarding this. Any help is appreciated.

I just want to confirm is the below the reason for the problem?

There is a naming conflict with the node package (Amateur Packet Radio Node Program), and the nodejs binary has been renamed from node to nodejs. You'll need to symlink /usr/bin/node to /usr/bin/nodejs or you could uninstall the Amateur Packet Radio Node Program to avoid that conflict.