casting vs choice

casting and choice both are nouns.

Word	Noun	Adjective	Verb	Adverb
casting	Yes	No	No	No
choice	Yes	Yes	No	No

As nouns, choice is a hypernym of casting; that is, choice is a word with a broader meaning than casting:

Other hypernyms of casting include option, pick, selection.

casting (noun)	choice (noun)
the act of creating something by casting it in a mold	the act of choosing or selecting
the act of throwing a fishing line out over the water by means of a rod and reel	the person or thing chosen or selected
the choice of actors to play particular roles in a play or movie	one of a number of things from which only one can be chosen
object formed by a mold

casting (adjective)	choice (adjective)
	of superior grade
	appealing to refined taste