APTs origins start in Debian which is a distro which many other distros are
based. APT is a set of APIs which the apt and apt-get command lines interact
with

- apt: The more friendlier version of the two!
- apt-get: The older of the two, backwards compatible and OG developer focused.
(others like apt-cache, ... exist!)

Conclusion: Stick with apt if you can. Use apt-get if you need specific function
alities that are otherwise unavialable. Doesnt matter much anyways none are dep
recated!