bluGill

You can reach farther inland than Chicago - Duluth MN. But Duluth is otherwise not a useful destination (unless you need iron ore).

Not the ones you mention, they are not traditional unix. Sudo is common though.

apt isn’t even common on linux (pacman or rpm are also used).

It is subtly different - generally enough to by annoying, but not actually significant (it is annoying to use zfs on linux but not really hard). There are sometimes advantages and disadvantages, but they are often obscure things that probably won’t matter to you (just like many people didn’t notice the switch from X to Wayland, or whatever init to systemd - in the end things are annoyingly different but it isn’t significant). Even where I can list something, in a few years there will be a new version and that would have changed.

The one consistent difference is BSD is a system which means tools like ifconfig are built in thus still works the way they did in 1995 - linux has gone through several iterations of replacement because they needed something that wasn’t in the default tool. OTOH, if you need one of those new features that caused linux to change in the first place you have to read the manual page either way as it will be a new option. Again, this is annoying, but not significant.

there are several tools which have different options in BSD vs GNU (though you don’t have to use the GNU versions on linux). Again, annoying.

You should know that wd is for water displacement. If you are trying to do anything else there is a better chemical you should use instead.