gouache and other paints?

I inheritted some artist paints not long ago and wasnt sure if they would be suitable for painting models. my model painting ranges from plastic car kits and plastic figures to ceramic figures.

I was wondering what the differance was between:

gousche-

lightfastness: I

vehicle: gum arabic

acrylic-

opaque lightfastness: I

vehicle: acrylic polymer emulsion

acrylic artists ink-

transparent

permanence ****

artists watercolor-

lightfastness: I

vehicle: gum arabic

I have only been using testers paints so far and am fairly new to paints in general.

any clearification on differences and use would be helpfull.