So, I'd like to know if I am able to legally use various title/job-class names(black, white, red, blue mage, and also Dragoon), and/or spell names(like blizzara, blizzaga, flare, ect), and/or the iconic clothing choice of having a yellow hat, a blue cloak, and brown shoes and gloves in non-commercial/commercial literature, artwork, and possibly games unrelated to the Final Fantasy series in all other aspects.
I'm questioning this for an obvious reason, that being I don't want to infringe on their rights in using any of those possible references in future works of mine.