Just a few questions about terminology and other game stuff

[ColorOfSakura]

Snip

Pretty much correct.

Interestingly, as an Arcanist you will have the ability to move into either a Healer or Damage Dealer role when you get to the point where you pick your Job (even though Arcanist is a damage dealer role until they pick a job.) Arcanist can become a Summoner (Damage Dealer) or a Scholar (Healing and Support). Depending on what role you'd like to fill, be mindful of where you place your attribute points. What you'll want to focus on: Intelligence is Magic Damage, Mind is Healing Potency, and Piety is Total MP.

You can obviously do both, but it can be tricky since you'll have a finite amount of points to use.